四期三期内必开一期是什么意思

简介：And then, Xiao Xiaobai, who heard a slight sliding and rubbing sound with keen ears, looked up and saw behind the frosted glass door that was slowly pushed open not far away. In the mist, there was a plump and mature figure wrapped in a purple bathrobe. Qianying stepped out, her bare feet on the soft carpet and walked towards Xiao Xiaobai with a smile on her face. It was Mu Lan.