as firm(/solid) as a rock; as firm(/secure/stable/steady) as Mount Tai;rock-firm/……似乎他的反動(dòng)統(tǒng)治從此可以～了。(《毛澤東選集》1145)…as though his reactionary regime had from that moment become as stable as Mount Taishan. ? 亮雖居虎口，～。(《三國(guó)演義》393) Although I am living in the tiger’s mouth. I am as steady as Mount Tai.
安如泰山an ru tai shan
as solid as Mount Tai
安如泰山ān rú tài shān
牢固得像泰山一樣。形容事物非常牢固。as solid as Mount Tai, be safe from all danger, as firm as Mount Tai