More than once in this topic, I was asked about Chinese truffles and warned people off them. They are a pale imitation of the European truffles. I'd only had them once, in a restaurant here in town and was, to say the least, underwhelmed.
Yesterday, I saw some and decided to give them a full test.
These are from Yunnan province which borders Myanmar/Burma, Laos and Vietnam and Tibet and they are between 5 and 7 cm / 2 to 2¾ inches in diameter and were the largest.
Almost scentless and flavour-free. So my advice remains the same. Avoid.