What about Chang Xiao's healthy products and courses? Is it worth buying?

I was planted by Xiaohongshu before. His treasure chest contains Qingyijian dietary fiber and Bifudan probiotics, which can regulate gastrointestinal health. A light and healthy body can supplement the dietary fiber needed for daily life and accelerate intestinal peristalsis. Bifudan probiotic has a cool taste, and it is dissolved by instant technology as long as it is put in the mouth. After clinical verification, the strain can be safely eaten. I don't know the rest. Yan value treasure chest is still worth buying.