Trees, up to12m, with many branches; Bark is dark gray, endothelium is light yellow, brown after drying, slightly sweet and astringent. Odd pinnate compound leaves, alternate, long 10-20 cm; Leaflets 5- 13, entire, ovoid or ovoid, 3-7 cm long and 2-3.5 cm wide, tapering at the top, rounded at the base, oblique, dark green on the surface, light green on the back, sparse or hairless, and short petiole. Growing on roadsides, in sparse forests or gardens. Warm and humid tree species. Areas with frost and cold cannot grow. It can grow well in the middle and low altitude areas where the annual average temperature is 20-26℃, the extreme minimum temperature is 2-7℃, and the annual precipitation is1000-2400 mm. I like light, but I also tolerate certain shade. It likes to grow in moist and fertile soil, but it can also grow and bear fruit under dry and barren site conditions, but the growth situation is very different, with many fallen flowers and small fruits. The suitable soil is red soil or yellow-red latosol, and the surface layer is sandy loam over 5-20 cm.