1. xiang mu   birch   cedar   oak   elm   Hint Half-n-half Clue   2. [sha;shan] mu   pine   chestnut   cedar   fir   Half-n-half Clue   3. bai yang shu   poplar   birch   elm   cedar   Half-n-half Clue   4. shan mao ju   cedar   beech   maple   elm   Half-n-half Clue   5. qi shu   birch   maple   elm   pine   Half-n-half Clue   6. hua shu   poplar   fir   birch   maple   Half-n-half Clue   7. xue song   poplar   cedar   maple   birch   Half-n-half Clue