Bip177: Redefine "Bitcoin" as the smallest unit (cong, sat) That is to say, 1 "BTC" is equal to 1000000000 new "BTC". At present, bip177 is still in the draft stage, similar to a stock split, but with significant impact: -Bitcoin supply limit: 21 million to 210 trillion -The current price of Bitcoin has changed from $100000/BTC to 0.001/BTC advantage: -Most people don't know about SAT -Promote BTC small payments -BTC prices are more affordable Disadvantages: -It will change people's current perception of Bitcoin and affect consensus BIP177 Proposal: https://(GitHub)/bitcoin/bips/blob/master/bip-0177.mediawiki