Pinyin: tu3 gu4 na4 xin1 Definition: lit. to breathe out stale air and breathe in fresh (idiom, from Zhuangzi 庄子); fig. to get rid of the old and bring in the new
Pinyin: cang2 wu1 na4 gou4 Definition: to hide dirt, to conceal corruption (idiom); to shelter evil people and accept wrongdoing/aiding and abetting wicked deeds
Decomposition Levels: Level 1: Only divided once. So only two components. Level 2: Radical Decomposition. The character gets decomposed into its lowest radical components. For the complete list visit the Radical wikipedia page. Level 3: Graphical Decomposition. Shows all the strokes & lowest level of components that make up the character. If you see questions marks or too many "block" characters, especially when it comes to level 3 decomposition you might need the correct font.