On the afternoon of June 8, at the G20 summit in Fukuoka, Japan, Christine Lagarde, president of the International Monetary Fund (IMF), said: Reconciling different countries to crypto assets (virtual currencies), non-bank financial intermediaries, etc. Different approaches are essential, but on the other hand, it is also necessary to target financial stability and consumer protection. "It is important to maintain an international dialogue, but it is not as simple as it seems." Lagarde mentioned a Japanese proverb "Shiqiao Yudu" (that is, the Shishidu Bridge, which is intended to promote things with caution). In the attitude towards the future of financial technology, prudence is indispensable.