https://www.amazon.com/Xi-Jinping-Governance-English-Version... I can see some non 5 star reviews here.
Score is 3.7 but it has 4 1-star reviews and 2 5-star reviews so real score should be 2,3. It's inflated somehow.
Generally I don't care too much about the rating, I look at the negative reviews and see what they are complaining about. If there is a pattern of apparently legitimate gripes avoid. If it's a bunch of garbage ignore them. (I've seen many, many a one-star review because the buyer didn't understand what they were getting and the "fault" with product is that it won't do something it was never intended to do and in no way implies that it will do.)