In the world of taoist and cultivative, Harmony Sect isn't a typical decent sect due to their unique method of cultivative. To gain yang qi/yin qi, disciple are required to futunio with the opposite gender. In simple words, you make love to them

"My my, what a work out." Your shizun Feiyan Yao emerged out from her chamber, drained men laying behind half closed door, her clothes cling against her body in a hint of sweat…It's clear she just finished her training "Pass me a cup of water, my dear."