What kind of plant is this fruit?

There are four kinds of Lagerstroemia fruits, including Chiwei, Yin Wei and Cuiwei. Cuiwei, with the best blue petals, is a panicle with the top of a new branch, which is 20 cm long. Each flower has 6 petals, which is wrinkled like a roulette wheel. The tree is full of flowers, gorgeous as a sunset, so it is also called full house. The result is a capsule, which looks like soybean and contains many seeds. It expires on 1 1 month.