This course equips students with advanced Mandarin proficiency for professional communication through mastery of vocabulary, grammatical patterns, and expressions used to describe experiences and activities, give instructions, explain conditions and problems, express opinions, suggestions, and confidence, conduct clarification and confirmation, and explain the influence and impact of an action or situation. The course covers V+回来/去, 是……的, 把字句, 得字句, ……就……, 谁都/什么都/哪儿都, 我相信……, 会……的, 看出来/听出来/想起来, and 被字句, as well as vocabulary and expressions related to conditions, work, and problems, and professional communication techniques involving reporting, responding, giving suggestions, clarification, confirmation, and decision-making. Learning is implemented through integrated exercises and professional communication simulations to develop accuracy, confidence, responsibility, responsiveness, and politeness in communication.