©
j.xianyu9: 1451725915832_.pic
©
j.xianyu9: Ex1.2
©
j.xianyu9: Ex1.2 --- From A leaf to A tree
©
j.xianyu9: 1441725915832_.pic
©
j.xianyu9: 1461725915832_.pic
©
j.xianyu9: 1471725915832_.pic
©
j.xianyu9: 1481725915832_.pic
©
j.xianyu9: 1521725915899_.pic
©
j.xianyu9: Ex1.1 ---- A leaf in A tree
©
j.xianyu9: 1431725915832_.pic