In fact, chicken rice and Dongpo rice were originally conceived by Lao Zhao. It seems that only Yoshinoya has it in China, and Japan doesn't exist at all. So it's not surprising that Hehe Valley has them!
As for the taste ~ Yoshinoya signed an agreement with the manufacturer when purchasing, and only sold it to Yoshinoya, because it is a patent of Yoshinoya, and the others are just imitations, not made by one manufacturer, and the taste is somewhat different!
Also, even if it is made by the same manufacturer, but different manufacturers have different tastes, you can eat more Yoshinoya to see if the taste is different, and how many are different. Even if you go to the same store at different times, the taste will change!