Sibo first talk about the HCIP certification pass rate. On the whole, HCIP certification pass rate will be much higher than HCIE, because HCIP after all, as long as the examination of two written exams, and HCIE in addition to the examination of the written examination in addition to the examination of a laboratory test. However, HCIP is still a certain degree of difficulty, not to say that every candidate to participate in the HCIP exam will have a full grasp, there is a large part of the need to retake the test. What we have to do is to improve their HCIP certification pass rate, may be in the whole data, HCIP pass rate is not high, we have to do is to try to make their own Huawei HCIP certification pass rate can reach 100%, the specific need to do, Sibbo will give you an introduction below.