According to ChainCatcher, Long Fan, founder of "Tree Graph" and director of the Shanghai Tree Graph Blockchain Research Institute, recently revealed in an interview with Xinmin Weekly that during his doctoral studies at MIT, he spent 1,000 USD to purchase 100 bitcoins, later selling them at 50 USD each. Now that the price of bitcoin has surpassed 100 thousand USD, he still does not own 100 bitcoins.