China's top economic planner on Tuesday revealed that 12 world-class design teams from home and abroad have been working on Xiongan New Area, noting that the construction of the Beijing-Xiongan railway has been underway since February. He Lifeng, director of China's National Development and Reform Commission (NDRC), was talking during a press conference on the sidelines of the ongoing annual session of the National People's Congress, China's top legislature in Beijing.