Non-Sino-Vietnamese reading of Chinese 開 (SV: khai).
Compare Hui'an Min Nan 開/开 (khui¹).
khui • (啟, 開, 𢴖)
- to open (something) with tools; to unpack (goods)
- khui sầu riêng ― to open a durian fruit
- khui chai rượu vang ― to open a bottle of wine
- (figurative) to expose; to broach; to open