Reliable. Zhao Zhao Medical Examination was established on 20 13, and belongs to Beijing Zhaotianxia Education Technology Co., Ltd. The Zhao Zhao team has more than decades of experience in examination teaching and research, and supports four days and three nights of video learning. It can learn knowledge faster, and it is more convenient. The teaching style is vivid, easy to understand and remember, and it is very reliable. Bet questions, a Chinese word, means to guess the possible questions before the exam and make key preparations. Also known as urgent problems.