If the sun shines on it for a long time, its leaves will roll up, so the leaves will not look good.
First, move it to an area where the sun can't shine directly, and spray some water on its leaves.
Second, in the ordinary maintenance, it prefers the semi overcast area. In the hot summer, it should be sunshaded to prevent the sun from directly shining on it. In the spring and autumn, the direct light is also bad for it. In the severe winter, it can see the sun
Third, it should be placed in a bright area, so that it can grow normally. If it is placed in a too dark area, the time can not exceed 50 days
This kind of tree is afraid of dry climate. If the humidity around it is not enough, its leaves will lack enough water and will bend.
It should be watered immediately to keep the soil moist without any excess water. Every day can also spray it once or twice leaf water, so that the air temperature drops, it can grow normally
If the sun is very hot in summer, the temperature is very high, or it is very cold in winter, the temperature is lower than 10 degrees, its leaves will not be able to carry out normal activities, will curl up.
Pay special attention to the temperature in hot summer, and don't let the sun shine on it for too long. In cold winter, the temperature should be in the range of 15 - 18 degrees, and the soil should be kept moist.
If the fertilizer is too big and the water is not enough, its new leaves will curl up.
It needs to be replaced or cleaned. To see if there are insects on the leaves, it may be caused by the bending of insects.