🎁🎁🎁🎁🎈🎈Prize Quiz🎁🎁🎁🎁🎈🎈

A friend brought me this kind of fruit from a business trip in Southeast Asia, it's sour and sweet. The skin looks like a durian, but it doesn't have spikes, and the flesh is also white. What is this fruit called? If anyone knows, please tell me, I'm waiting online...