Litecoin founder Li Qiwei said on Twitter: "Since the halving, 504 blocks have been mined. This is 1/4 of the next difficulty change. 21.65 hours have passed since the halving, usually 504 The block takes an average of 21 hours. This means that 97% of the calculations before the halving are still mining LTC. The next difficulty adjustment is about 2.7 days."