Useful. Putonghua proficiency test is an oral test of the standard and proficiency of candidates in using Putonghua. They have not reported to class for seven times, so they can carry out key training content, which is useful and helps them pass the exam. The level of Putonghua is divided into three levels and six levels, that is, one, two and three levels, and each level is divided into two levels, that is, the highest level A and the lowest level B.