Why can Huaneng only apply for campus recruitment twice?

In order to improve the chances of taking the written test and interview. Shijiazhuang Huaneng Electric Power School is the only comprehensive full-time technical school with high starting point, high standard and electric power specialty approved by Shijiazhuang Education Bureau. In order to improve the chances of taking part in the written test and interview, you can only apply twice. Campus recruitment is also called school recruitment, and individual outstanding students can work directly through school recruitment.