Fu Sheng spent all his cultivation for Xiao Wei. Xiao Wei said that he would protect Fu Sheng for thousands of years, but the millennium was long and Xiao Wei lived like years. He begged Nuwa to shorten the time. Nu Wa couldn't bear the suffering of her beloved disciple, so she agreed, but at the cost of Fu Sheng's memory. Xiao Wei agreed that Nu Wa would seal the memory in a jade flute. When Fu Sheng falls in love with Xiao Wei again, the memory can be unsealed.