How to flatter someone with integrity?

The first thing to flatter someone is to praise someone. There are three levels of praise. The first is to praise someone in person. Directly say, Director xx, you are so talented, but don’t be too insensitive, otherwise it will appear that you are not good enough. . The second is to spread your praise by word of mouth when you meet someone, and let others pass your praise to the leader. The effect will be better. The third is to throw it across the wall. For example, if the leader is in the room and you are next door, you can loudly say "Director XX, how is it?", the effect will definitely be unmistakable. Haha, isn’t it too social?