Hello,

This is the lantern fruit

The lantern fruit belongs to the genus Chaetomium in the currant family. The bush is about 1.2 meters tall, and the fruit is a small round fruit covered with a lantern-shaped pod, a little larger than a thumb, with many small seeds inside. It is extremely sour in flavor when unripe, yellowish green when ripe, and purplish red when fully ripe.

I hope my answer can help you, satisfied with the hope that adopted~