Explanation: Tree: growing the culture. Analogy personnel training forever. Also said that personnel training is not easy. Usage: Complex sentence; for clause; with commendatory that personnel training is not easy Source: Qin Guan, "the right to repair pipe": "plans and preparations, nurturing Valley; decade is planting trees; life is nurturing people." Examples: Westerners are aware ~, we should regard the cultivation of talents this issue well.