In summary, the interactions between Yang Xiao and Xie Sui were quite pleasant.
They chatted over tea, and before they knew it, the morning had passed.
When Su Qian'er came to call them for lunch, just as Xie Sui had said she would, Xie Sui seemed reluctant to end their conversation and dallied for quite some time before finally taking Yang Xiao out of the study.
Xie Sui was well aware that after lunch, Yang Xiao would leave with Su Qian'er.
He couldn't keep Su Qian'er too long since she had her own career, and if Su Qian'er left, he certainly couldn't just keep Yang Xiao there by himself!
So even though he had many more things he wanted to talk about with Yang Xiao, and many questions about traditional Chinese medicine he wanted to discuss, the opportunity was gone.
For Xie Sui, this was undoubtedly a great pity. Heaven knows how much he learned and was inspired by half a day's casual chat with Yang Xiao.
Unintentionally, his medical skills had markedly improved.