Tong Zi facts

While investigating facts about Tong Zi, I found out little known, but curios details like:

There is a Chinese delicacy, tong zi dan (also known as virgin boy egg), that is an egg boiled in the urine of prepubescent boys preferably under the age of 10. The urine is collected from school toilets or boys urinate directly into collection buckets set out by vendors.

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