Qu Yuan's Tian Wen put forward 173 questions about heaven, earth, nature, society, history and life in one breath, which is the origin of Tian Wen's literati complex. Since then, many poets have moved to other places to express their feelings and ultimate questions about life in the form of Tian Wen.
Tian Wen by Yu Guangzhong is also listed here.
Eternity of heaven refers to endless confusion about life, endless efforts on the road of pursuing the meaning and value of life, endless exploration of all things in the universe, and ultimate questioning of life itself; Such a problem is naturally eternal. As long as people still exist, they will surely ask questions and die.