I do not interest in chestnut yet. As far as I know the best chestnut is produced in Lian-Shang near Tientsin.
Castanopsis from Hangchow is very nice. They said the tree is over 100 feet high and is ever green.
Hazelnut is from Chili and North. They are not so good as yours.
Chinese almond is apricot kernel, the best one is from Peking or
Tientsin.
Ginkgo nuts are never eaten afresh, we eat them sometimes roasted and most times cooked with meats. In which you will find both meats and nuts of good taste.
I like Torreya Grandis very much, I think Americans do not like it because they do not use the right way. Chinese roast the Torreya nut until all moisture gone then wait they are cold and eat them. They must be kept dry after roasted otherwise the taste is not so good and a second roast is necessary.
I hope you will try the above two kinds nuts by the above way, as Ginkgo can live over thousand years and Torreya in this country is also long lived, their nut fat would keep the human tissue less easy to decay.
The pine seeds kernels are sold here for Mex. $1.60 per pound. If your pine seeds kernel are cheap, it is possible to come over. The pine seeds are Pinus Bungeana and P. Massoniana.