When I googled, I found the below definition.
Poon Choi also known as pun choi or Big Bowl Feast, is a traditional type of food originated from Hakka cuisine. It may also be found in different parts of Hong Kong. It is served in wooden, porcelain or metal basin. Before the dish was served. We all were busy taking photos for each other. You took for me and I took for you.
Finally, the great dish arrived.