When will the Beijing Opera be on?

M: Susan, Please pass me a copy of China Daily.
W: Here you are.
M: I want to find what’s on this weekend.
W: Is there anything good on?
M: The Beijing Opera is showing on Saturday evening. Do you like Beijing Opera?
W: Oh, yes. Very much. When and where will it be?
M: At 7:30 in Beihai Park.
W: Let’s go and see it, OK?
M: Good idea！