Where is the best cucumber in China? Where is the high yield area of cucumber?

I don't know if the cucumber I want to talk about is the best among all cucumbers, and I don't know if it is representative, but at least it is super good among the cucumbers I have eaten. That's Yantai, specifically the local cucumber in Longkou. After living in Beijing for at least so many years, there is nothing on the market. The cucumber in Longkou is yellow-green, which will be aggravated according to the amount of fertilization, but it is not the black-green of the thorn cucumber. Not as rough as the so-called cucumber skin. Thorn cucumbers and dried cucumbers will not be bought locally in Longkou, because the local cucumbers are really excellent and tender. Hey hey.