Sefer Etz Chaim and Tanya

Text 1 (Etz Chaim) extensively discusses shevirat-hakelim as a process of cosmic breaking and restoration, focusing on the mechanism of which shells (akhoryim vs panim) broke, how they were repaired through birth/nursing processes, and the ongoing extraction of holy nitzotzot from klipot. Text 2 (Tanya) mentions shevirat-hakelim only briefly as a past event explaining how profane wisdom became contaminated with nitzotzot that fell into klipat nogah. Text 1 emphasizes the detailed mechanics and ongoing work of separation; Text 2 uses it as background justification for why secular wisdom requires spiritual purification. Both accept the doctrine but differ significantly in emphasis—Text 1 focuses on structure and process, Text 2 on spiritual contamination and purification.