A traditional Chinese mannerism to show Humility is by forming a fist with one hand and covering it with the other hand. The fist is covered by an open palm, signifying one's yielding of hostility towards peace, a sign of humility. This is an ancient Chinese way of signifying peace, humility, and respect.
Here is an illustration:

Linkback:
https://tubagbohol.mikeligalig.com/index.php?topic=51005.0