Oh, from what I can tell from online it seems like this was discovered really recently and is one of the smallest mushrooms in the world? That's so cool! It's impressive that such good quality photos have been taken of it if it's so new and rare.

https://www.researchgate.net/publication/334596263_Two_new_species_of_Mycena_in_Taiwan

https://www.taiwannews.com.tw/en/news/4834381