The most valuable qualities of the acacia tree in front of the window are calmness, simplicity and strength. The Tree in Front of the Window" is a materialistic essay by the writer Zhang Zangan, describing the hidden green but not noisy acacia tree in spring, which is fragrant with flowers in the breeze. In the summer, even though the wind is blowing the tree to the ground, the tree still stands. The golden leaves of the acacia tree fall in the autumn when the wind starts to blow. As well as the winter only left the trunk of the tree without cover but still erect and proud of the acacia tree, showing the acacia tree's calm, simple and strong.