A wild fruit from the mountains that bursts open in August, once found everywhere, now a rare commodity at 35 yuan per jin

Life in rural areas used to be not as good as it is now. Back then, life was relatively hard. When children were thirsty or hungry, they had no money to buy snacks at the village shop, so many rural kids would go into the mountains to pick wild fruits to eat. At that time, all kinds of wild fruits were everywhere in the mountains; a casual search would turn them up, and then you could pick them and eat them. They were not only tasty but also nutritious, and were deeply loved by rural kids and farmers alike. Below, the author introduces just such a wild fruit.
The author still remembers that 25 years ago, all kinds of wild fruits were abundant in the mountains. When rural kids were hungry or craving a snack, they would go into the mountains to pick wild fruits to eat. From June to August, one wild fruit was especially loved by rural kids. This wild fruit is usually purple, and some are yellow. In July or August, it would "burst" open with a slit. By this time, the rural kids were already on summer vacation, just the right time to go into the mountains and pick this wild fruit to eat. This wild fruit is the "niuluan tuo," also known as "bayue zha" or "bayue gua."
At that time, this wild fruit was everywhere in the mountains. Basically, you could pick it and eat it freely. Many rural kids, during summer vacation, whenever they had a craving, would secretly run up the mountain to pick bayue zha to eat. It was not only delicious but also satisfied their cravings. Moreover, many farmers, when they went into the mountains and got thirsty, could also pick some of this wild fruit to eat. Therefore, in the past, bayue zha was also deeply loved by farmers.
However, although rural living standards are now much better than before, these wild fruits are becoming fewer and fewer. They are rarely seen even in the mountains. If you want to eat them, it is not easy, and you have to spend money to buy them.
These past two days, when the author went to the mountains to have fun, after searching for a long time, no bayue zha could be found. However, in a farmer's field, the author did see cultivated bayue zha. But the bayue zha now had not yet burst open; it had only recently set fruit and was still green. According to the farmer, this wild fruit used to be everywhere in the mountains, and you could eat it whenever you wanted. Now it is not easy to find this wild fruit in the mountains, and it depends on artificial cultivation. According to this farmer, though this wild fruit used to be eaten freely, it is now a rare commodity; in the city it sells for 35 yuan per jin.
It is hard to imagine that a wild fruit once found everywhere in the mountains now sells for such a high price. Friends, did you eat the wild fruit "bayue zha" when you were children? How much does it sell for where you are now? You are welcome to leave a message and share.