Chai 30 is a Chinese restaurant on the 30th floor of the Professional Construction Center near Boramae Hospital in Sindaebang 2-dong, Seoul. It serves jajangmyeon, jjamppong, tangsuyuk, eohyangdonggo, and Chinese-style naengmyeon, with a salad bar at weekday lunch. On clear days the view reaches Lotte Tower in Jamsil and Bukhansan. Diners get two hours of weekday parking and three hours on weekends, and course meals sometimes have long gaps between dishes.