For people who cannot open Reddit on mobile : "if you take the last character from each part, top to bottom, left to right: 因果由國 容港治己 義憤民誠 - Cause and effect

For people who cannot open Reddit on mobile : "if you take the last character from each part, top to bottom, left to right: 因果由國 容港治己 義憤民誠 - Cause and effect came from (or depends on) the country, allow Hong Kong govern itself, righteous indignation came from people being honest."