You can search Heilongjiang 14 provincial exam free YY open class schedule to see what free open classes are available in the near future.
There are also some free YY open classes 1.2.3.4 in June. There are also some free lottery activities in the class, including giving away books and courses, which are very affordable. Students in need can click to view the timetable of YY open class of Heilongjiang civil service examination.
I hope I can help you!
If in doubt, please consult the public education enterprises in China.