Every once in a while I would hear something crazy from China like this and was always weary of food from China for this reason. You have to think, not only is the food being shipped from the other side of the world (just think of what could happen during that time and possible exposure or contamination) but beyond that look at what certain Chinese companies are doing to food. Making it fake, and as cheap as humanly possible. China is using their innovative methods that they use to make cheap technology products, toys and other consumer products and applying that mindset to food, which is absolutely dangerous.
US inspectors have found tainted mushrooms from China. Some manufacturers in China go so far as to label these processed mushrooms organic to increase their profits. If you do a google search you’ll find that there are many “mystery mushrooms” in China, completely fake. 34% of processed mushrooms are from China. Do your best to know your source, buy local and true organic!