Xie An held a family gathering on a cold snowy night to explain poems and songs to his sons and nephews. On a cold snowy day, Taifu Xie told his children that the meaning of paper came from Liu Yiqing's Ode to Snow in the Southern and Northern Dynasties. Xie An held a family gathering on a cold snowy day to explain poems and songs to his sons and nephews. Among them, the literal meaning refers to poems and songs, and snowy days refer to cold and snowy days. The last sentence refers to the sudden snow for Russia, and the public happily said: What is snow like?