木 (mù) is the 75th Chinese radical, means "tree" and is made of 4 strokes.
Chinese characters are usually made of one or several radicals among 214, thus, knowing radicals helps remembering characters.
This video will teach you how to pronounce 木 in Mandarin Chinese, how to write this character, with a simple visual to remember it easily.
For sentence examples for 木, visit its dedicated page on HSK Academy at www.hsk.academy/en/characters/木