I like to go Chaoyang city from Luohu bus station of Shenzhen, what is the time schedule and how much fare ?

From Luohu Bus Station, you can find direct buses to reach Shantou City Bus Station. From that station, you can you can find special line to reach Chaoyang directly.
The bus for Shantou operates from 07:20 to 21:40. The bus fare is around 150RMB per person. The special line's fare to reach Chaoyang is no more than 10RMB.