北坡的树,靠近山溪,水源充足,但缺乏阳光；
The tree on north slope enjoys plenty of water, but lakes sunshine
南坡的树光照充足,却离水源很远.
The tree on south slope has lots sunshine, but is short of water.
为求生存,南坡的树向北伸出一根长枝,经过长年累月的生长,这枝终于搭到北坡这棵树上,并最终长在一起,形成了一个生命共同体.
For survival, the tree in south strethed out a branch. Days passed, and year passed, the branch finally reached the tree in north. Two trees integrated into one, and grow together enjoying both sunshine and water.