how many times the train will makes guangzhou to nanjing

only K528 and K222 travel from Guangzhou to Nanjing.
K528 departs at 08:00 from guangzhou and arrives in Nanjing at 08:15 the next morning. and it has 23 stops on the way. the fare for hard seat is CNY236, CNY428 for hard sleeper, and CNY741 for soft sleeper.
K222 leaves Guangzhou at 09:15 and reached Nanjing after 24 hours. it has 18 stops on the way. the fare for hard seat is CNY206, CNY377 for hard sleeper, and CNY656 for soft sleeper.