is a cultivation method from the underworld, it costs 100 paper money, it's not considered high-end.But even the high-level Lu Cheng couldn't get it.Yin Qi Exhaling and Inhaling MethodExpansion Pack:... intently, a thoughtful expression on his face. After a while, he spoke.Speaking of siege engines, last time I led my troops into the desert and raced against the Xiongnu. At night, to sleep better t...