拍砖

Meaning

"Wenhua lüzhou" (文化绿洲/cultural oasis) describes someone very knowledgeable. Like an oasis irrigating land, they spread culture to those around them. Opposite of "wenhua shamo" (cultural desert). Has appeared in policy documents for a long time; recently developed online as a way to praise knowledgeable people. The meaning fits perfectly, so usage is increasing. "This person is a cultural oasis" = "This person is very cultured."