Is Li Fengxiang's TV lecture on blood circulation and human health true or false? Is it a scam?

Although I gave a health lecture by Kangmei Li Xiangfeng, in the end, all the health lectures aimed at selling drugs were false, because regular drugs were not needed to be sold and were not allowed to be sold. What drugs are used in hospitals are strictly examined and approved by China's regulatory authorities, and they must be taken according to the dosage under the supervision of doctors. But what you sell on TV to take home for yourself, either fake or health care products, has no therapeutic effect on disease recovery, so the ultimate goal is to cheat money.