One 'nut' I forgot! Except it's not a nut but another drupe.
椰子 (yē zi) does grow hereabouts, but most are from Hainan, China's southernmost island province.
I'm talking 🥥, Cocos nucifera, the coconut. Sold in supermarkets, fruit stores and by itinerant street vendors. They come in various forms.
The street vendors usually have this type which they sell chilled and drilled to insert a straw to get to the coconut water.
Also, hugely popular across China is this coconut drink. It is sold everywhere from mon n pop stores to being served at state banquets.
Various brands of coconut milk / cream are also available so I get my SE Asian fix. This is the most common.