C1966 He Went down the Mountain
The explanation is quite straightforward: after one night, Lee Yun remained a virgin, and neither Fang Xue nor Lee Feng had yet to surrender themselves. Once the trio had finished bathing, they simply turned on the air conditioning and went to sleep.
Consequently, the three of them hadn't experienced much personal growth overnight. Ahem!
Come morning, Lee Yun donned a robe, grabbed a cup of tea