開通 Simplified: 开通 On the HSK 6 vocabulary list, at CEFR level C2. kāitōng ㄎㄞ ㄊㄨㄥ to open (a new road or railway line) to set up (a hotline) to launch (a service) to subscribe to (a members-only service) kāitong ㄎㄞ ˙ㄊㄨㄥ open-minded Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0 国际中文教育中文水平等级标准, 中华人民共和国教育部, MIT