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