Chinese (People's Education Edition, 2003): "The Yanwu is in one room."
Chinese (People's Education Edition, 2000): "Talk in one room." In addition, Yanwu has been lent by Zhonghua Book Company (1959) and Yuelu Book Company (1988). I studied Chinese in 2000, so I usually write "greetings".
In my opinion, both should be correct.