Just put a little citric acid and salt when the sugar is almost ripe, about as much as a nail.

The pot is still bubbling, so take out the citric acid, hold it with a bamboo stick, stir it in the pot, and then start taking the gourd! Take it out and put it on the iron plate, and the beep will take shape. It's thin, crisp and hot, but the sugar on the candied haws is crisp.