新

xīn
Left: parents 亲 (They stand 立 as supervision in the tree 木), right: axe 斤
Out of a standing tree, the axe makes something new.

亲

qīn|qìng
Top: to stand 立, bottom: tree 木 (simplified from: 親, which comprised 'to see' 見)
They stand in a tree and look after the close ones: The parents

薪

xīn
Top: plant 艹, below: new 新 (From a standing 立 tree 木 your axe 斤 makes someting new.)
(All) plants and also standing trees are made with the axe to: firewood.