The phrase "early C, late A" (早 C 晚 A) refers to the 12-hour time difference between the United States and China. When it's nighttime or early morning in the U.S. (e.g., "C" representing late hours there), it’s daytime or early evening in China (e.g., "A"). For users of the same app, this time difference means that membership activity or engagement times align in a complementary way. For instance, American users are active during their daytime, which corresponds to the nighttime in China, and vice versa. This creates a positive cycle for app activity, as users in different regions can fill in each other’s inactive periods, ensuring the platform is active almost 24/7.