Leaving Tianyi Pavilion, Han Lang immediately returned home to finalize the preparation and integration of the medicines.
With the medical experience of Shennong Tianyi as a foundation, Han Lang quickly resolved the issues one by one.
First, to ensure the optimal efficacy of the Bai Ling Shen Guo solution while avoiding any harm to people of different constitutions, he deliberately reduced the concentration of the solution again, with the essence of one Bai Ling Shen Guo corresponding to 38 liters of water.
With such dilution, the spiritual energy content in the solution was closest to the constitution of Blue Star people. Even if one accidentally drank too much, it would only cause temporary discomfort. After the medicinal effects dissipated, one would immediately recover to normal, with no harm to the body.
Second, he also improved the formula for the cold medicine produced by Han's Pharmaceutical Factory, mainly to add some new medicinal herbs to neutralize the Bai Ling Shen Guo solution, thereby making the medicinal effects gentler.
Finally, there was the dosage of the medicine.
Han's Pharmaceutical Factory produced oral liquids in 15-milliliter bottles. To make this dosage more suitable for the elderly and children, Han Lang deliberately set the ratio of the cold medicine and the Bai Ling Shen Guo solution to 2:1. That is, 10 milliliters of cold medicine was mixed with 5 milliliters of Bai Ling Shen Guo solution.
With such a dosage, one bottle would be enough for a child's cold, while adults would need two bottles. Those with severe colds could also add more according to their own condition. It was not only convenient but also safe.
With the medicines prepared, the next step was to find the Cao family or the Tang family to discuss cooperation.
Since it was cooperation, it was a matter of mutual selection. Therefore, it was useless for him to prefer one family over the other. After all, it was they who were choosing him now, not the other way around.
"Let's try the Cao family first! They are closer, after all."
Having made up his mind, Han Lang quickly drove to the Cao family villa. Butler Deng of the Cao family warmly welcomed him in.
"The Patriarch and the Old Master are both out, only the young lady is at home. Mr. Han, please rest for a moment, I will go upstairs to call her down!"
"Thank you, Butler Deng!"
"You are too kind, Mr. Han!"
A moment later, the 'tick-tock' of high heels echoed from upstairs, along with Cao Xuerong's slight cough.
"Huh? Why are you alone? Where is Xiao Ying? Cough, cough, cough..."
Cao Xuerong, wearing pajamas, looked somewhat haggard. She coughed continuously while asking about Luo Jiaying's whereabouts in surprise.
Han Lang looked at her curiously and replied.
"Oh, she's with my mother these days. What's wrong? Miss Peach, are you not feeling well?"
"Cough, cough, cough..." Cao Xuerong poured herself a glass of water and said, "I have a cold, I feel a bit unwell."
"A cold? That's great! A timely help!" Upon hearing that Cao Xuerong had a cold, Han Lang couldn't help but slap his thigh happily.
"Great?" But a hint of anger flashed across Cao Xuerong's pretty face. Han Lang immediately realized his words were inappropriate and apologized.
"I'm sorry, Miss Peach! I didn't mean it that way. I meant you could try my newly developed cold medicine!"
As Han Lang spoke, he took out a few prepared vials from his jacket pocket and handed them to Cao Xuerong.
"Newly developed cold medicine?"
Cao Xuerong took the vials from Han Lang's hand, examined them closely with curiosity, and asked.
"So, you came to see me specifically for this matter today?"
Han Lang did not hide anything.
"That's right! To be honest, our Han family pharmaceutical factory is currently facing a severe economic crisis and needs two hundred million to get through it. That's why I specifically brought the newly developed cold medicine to ask for your help."
After hearing this, Cao Xuerong immediately placed the vials in her hand on the coffee table and said sternly to Han Lang.
"Young Master, we are acquaintances, and you are a benefactor to my Cao family. Coupled with Xiao Ying's relationship, as long as you need it, two hundred million is just a loan. However, if you want to trade the formula of this cold medicine with me, then... forgive my bluntness, from a business perspective, the current cold medicine market is quite saturated, and it might not be worth that price."
"No, no, Miss Peach, I think you might have misunderstood." Han Lang quickly explained, "I'm not selling you this cold medicine formula for two hundred million. I'm just here to discuss cooperation. For two hundred million, I can give you at most fifteen percent of the shares."
Cao Xuerong was so surprised that her jaw almost dropped.
Even selling it directly to me felt not worth two hundred million, and you're only giving me fifteen percent of the shares? Are you kidding me!
"Did I hear you correctly, Young Master? Two hundred million for just fifteen percent of the shares?"
Han Lang nodded with a firm gaze.
"You heard correctly, I can give you at most this much, no more."
Cao Xuerong felt a bit speechless. She had hinted so obviously, didn't he understand what she was trying to express?
"No, Young Master, I mean..."
Just as Cao Xuerong was about to explain in more detail, Han Lang interrupted her.
"Miss Peach, I understand what you mean. However, I hope you can try my medicine first before making a decision. Adults should drink two bottles at a time!"
Han Lang picked up the small bottles on the coffee table again and confidently handed them over.
Cao Xuerong looked at Han Lang with some confusion, took the medicine bottles, and asked with a face full of suspicion.
"Does this meet the national drug quality inspection requirements?"
Han Lang was stunned by the question. The medicine had just been developed, so there was no time to do that. He could only say awkwardly.
"This... I haven't had time for that yet."
Cao Xuerong's eyes widened as she continued to ask, "In other words, this medicine of yours currently only has your own research and has not undergone clinical trials?"
Han Lang scratched his head sheepishly and replied, "Yes... yes!"
Cao Xuerong was completely speechless. "So, you intend for me to be your test subject now?"
"Not exactly! I've had people test the medicine, and there are no problems. Moreover, with me here, you don't need to worry!"
Hearing Han Lang say this, Cao Xuerong finally found a reason to believe him. In terms of medical skills, in her understanding, no one was more reliable than Han Lang. Therefore, as Han Lang said, with him present, Cao Xuerong was indeed not very worried.
"Tsk tsk... you really are... skilled and bold!"
Cao Xuerong exclaimed, then unhesitatingly picked up two bottles of the medicine and drank them down.
Shortly after, an unbearable heat emanated from every pore of her body, and her head became somewhat dizzy. She was terrified and immediately shouted.
"Young Master, what kind of medicine is this! It feels so uncomfortable..."
Before she could finish speaking, the heat instantly subsided, followed by an indescribable clarity, and her mind became clearer than ever before, her spirit also invigorated.
"Ah..."
Cao Xuerong felt somewhat surprised, and at the same time, she felt something was not quite right, but she couldn't quite pinpoint it. Han Lang, however, just looked at her with a smile, seemingly intending for her to experience it herself and not planning to explain anything.
"I..."
Cao Xuerong hesitated to speak, forcefully blew her nose, and found her breathing incredibly smooth.
"My nose, it's unblocked?"
She was somewhat incredulous. Her nose had been so stuffy for the past two days that she had to breathe through her mouth while sleeping, but now it was inexplicably clear.
"Cough..."
She tried again, "It seems I'm not coughing anymore, my head doesn't feel dizzy, and my throat doesn't hurt anymore. This... this is too sudden?"
Cao Xuerong finally realized what was wrong. The cold symptoms that had bothered her for several days had suddenly disappeared, and she was unable to adapt for a moment, which made her feel that something was not quite right.
"How is it? Do you think this is worth two hundred million?"