How do ungrateful people post on WeChat Moments?

The ungrateful people posted this on WeChat Moments:

1. Some people are really ungrateful. No matter how kind you are to them, you can't get a trace of gratitude. I hope they can understand as soon as possible that only by treating others sincerely can they gain true respect.

2. People who are ignorant are like buckets that are never full. No matter how much you give them, they never feel it is enough. To get along with it, you really need a generous heart.