metanarrative (grand narrative)

https://en.wikipedia.org/wiki/Metanarrative

https://zh.wikipedia.org/zh-tw/%E5%AE%8F%E5%A4%A7%E6%95%98%E4%BA%8B

比如說中國特色的社會主義就是宏大敘事

Such grand metanarratives always promise something larger than life, which is why life, individually lively life, means nothing to them.