Siheyuan: a hundred-year-old Chinese medicine doctor, Jiehu Qinhuairu

Song Qingshan traveled back to the courtyard in the 50s, became a hundred-year-old Chinese doctor, and awakened the miracle doctor sign-in system.
Qin Huairu had just entered the city this year and hadn't married Jia Dongxu yet.
In order to occupy Song Qingshan's house, Jia Zhang did not hesitate to let his prospective daughter-in-law stage a fake marriage.
"Huairu, what can a centenarian do? When he dies, you will still be innocent."
Jia's mother and son made a vow.
Just half a year later….
Jia Dongxu: How come the promised centenarian is still pregnant after a fake marriage?
Jia Zhang: Son, I miscalculated, I should have let him be your stepfather.
Shazhu: Why do I feel like I can't survive this old man?
Deaf old lady: Relying on the old and selling the old, I am not as good as Brother Song.
Xu Damao: Can boy urine really cure infertility?
Qin Huairu: Lou Xiao'e, Ran Qiuye, Yu Haitang, Yu Li, can you stop harassing my husband with the excuse of medical treatment?