It's hard to have good comments and favorable comments. Next sentence

Like lemons in water. According to China Literature Network, it's really bad to comment on wonderful praise. The next sentence is like lemon in water, which means: trying to praise, praise or affirm others is like adding lemon to clear water, which makes it sour and difficult to swallow. On the surface, it is a compliment to the other party, but in fact it is a derogatory compliment to the other party.