The second one refers to the institutions (or majors) that participated in the second batch of undergraduate courses in the college entrance examination. Generally speaking, most undergraduate colleges enroll students in the second batch.
However, there are exceptions. Some institutions participate in different batches of enrollment in different provinces, such as Beijing Institute of Printing. Some provinces, autonomous regions and municipalities participated in the first batch of undergraduate courses, and Hunan participated in the second batch of undergraduate courses. Some colleges are even 2 1 1 engineering colleges, and a few majors also participate in the second batch of undergraduate enrollment. For example, the mining engineering major of Chongqing University (985,211engineering college) participated in the second batch of undergraduate enrollment in many provinces and regions.
The second batch of colleges (majors) are large in scale, with many enrollment plans and very rich in college categories. Some institutions are recognized by the society because of their typical industry characteristics, such as National University of Defense Technology, Hunan Business School, Nanjing University of Posts and Telecommunications, etc. Some universities, such as those in Zhejiang and Shanghai, are highly praised by candidates because of their good geographical location and high employment quality.