My Sect Leader is Number One Under Heaven

Chen Sha arrived in a world of Immortal Martial Arts, and was given the order to take charge of the number one sect under heaven.The previous sect leader, before his death, instructed him:"If you don't become number one under heaven, you are not allowed to leave the mountain for a single day."So he diligently went into seclusion, crossing the celestial gate within his body, and dueling with top experts of old and new......Many years later, Chen Sha recalled the day he descended the mountain,He became number one under heaven from the moment he left the mountain.For the next dozen or so epochs, no matter if gods and demons returned, immortals and Buddhas existed, ancient great beings and ancient gods appeared one after another.No matter how the times changed, he had always been the number one under heaven, and it had never changed.