At the moment this vegetable is in season but I never found the name for it in English.
Since I cant post pictures here I include a link to a Taobao page that sells them so you can have a look.
Google translate comes up with "Ginger Handle Melon" but I doubt that that is the real name for them.
And since we are at it; what is the name for this one:
It might be Chayote (Sechium edule) (aka Mirliton in Louisiana)