It had almost been three years but the whole clan was still mourning for the tragic death of Uncle and Auntie Luqiu. The subsequent event with Ningning had taken over their focus since then. The obsessive grief as well as the fact that she inherited Auntie Luqiu's pure yin body had made her more susceptible to resentful energy. They had no choice but to live in this kind of place so as to not draw anyone's attention to Ningning's unusual conditions.
Exhaustion rapidly caught up to Heimo but he tried not to show it on his face as he strode inside and slumped down onto the couch. They needed him to be strong, to protect them when no one else could. "It's done, Shijie!"
Luqiu Hong was surprised to see him there. "You're still awake?"
Heimo harrumphed and boastfully patted his chest. "I told you that I am growing stronger. See?" His smile morphed into a more serious one. "If this happens again next time, you should inform me as soon as possible."
Trivia: Human's body has a proportional amount of yin and yang. According to wuxia world's knowledge, men often have more yang than yin and thus their body is hotter and stronger. Yang energy can also be used to wipe out ghostly energy or in this arc, I am calling it demonic energy.
On the other hand, Ningning has pure yin body. That means her body is 'cold' and the perfect vessel for demonic energy. Usually, women with pure yin body is called human cauldron because it's the perfect body for dual cultivation aka whoever have sex with them will be able to increase their cultivation quickly.