[lǚ tāng dǎo huǒ]   

履    汤    蹈    火    身入汤火。比喻处苦难之境。

身入汤火。比喻处苦难之境。

Go into boiling water and walk through fire and water

履薄临深    履仁蹈义    履足差肩    履汤蹈火    履霜之戒