There are so many people, so let’s eat at the buffet.
Jin Hansi (the building next to the KFC in Xinyang Plaza, which is the direction to the main entrance of Major Area A, on the second floor), 49 yuan per person, and you can get a discount with your student ID. The environment is noisy, but it is quieter in the private room.
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Big Pizza (upstairs in Jiamao, it seems to be the fourth floor, I haven't been there for a long time) is also 49 yuan per person. The environment is relatively better, but it doesn't seem to have private rooms.