CityFly takes off as China's newest travel trend in low-altitude tourism

①China's railway passenger trips up 6 pct in first three quarters ②World's fastest high-speed train blazes to 453 km/h in pre-service trials ③CityFly takes off as China's newest travel trend in low-altitude tourism ④China unveils regulation on water sources protection at Beijing reservoir ⑤China adds 22 sites to wetlands of national importance list ⑥Researchers map emperor penguin habitats under climate extremes