Both Huang Zhenlong herbal tea and Huang Zhiqiang herbal tea have callus herbal tea. Is there a big difference?

I am an expert in drinking herbal tea. I drink it every day. I used to drink it every day in Huang Zhenlong, and then I went to Huang Zhiqiang every day. Huang Zhenlong's calluses will be bitter, but a little hard, and the effect is good, but not as good as Huang Zhiqiang's. Huang Zhiqiang's swelling is bitter, but it is sweet, and the effect is better than that of Huang Zhenlong. Generally, I only drink strong yellow, and two bottles can hold my breath, but it took me five bottles in Huang Zhenlong to hold my breath. For those who know about herbal tea, it is well known that Huang Zhenlong changed the original formula of herbal medicine to reduce the cost. No wonder it is not as effective as Huang Zhiqiang herbal tea.