A game between Zhou and Chen which Zhou himself was very proud of.
There is a heated discussion about this game recently in Chinese online Go community. Someone analyzed the game with Katago and found 吻合度 was very high. Roughly 吻合度 is (the number of moves that AI approves) / (the total number of moves). They thought this implied Zhou and Chen were super strong, likely as strong as top players today. Some others argue that one single game doesn’t mean much and it’s questionable whether 吻合度 is correlated to a player’s strength.
AFAIK, 吻合度 is something first implemented in lizzieyzy and is officially translated into accuracy. Lizzieyzy is a lizzie mod which is popular in Chinese go community. It can be found on Github. I have never used lizzie so far so I might be wrong.