China Southern Power Grid did not receive an interview message after three weeks of written examination.

The reason why China Southern Power Grid didn't receive the interview message three weeks after the written test was because it didn't arrive at that time. According to the relevant regulations of China Southern Power Grid Examination Center, it takes 35 to 38 days for an interview after the written test. Fresh graduates need at least one month to interview, and graduates who have worked for 2 to 3 years can interview for at least 5 days.