Aerial photo taken on Aug. 9, 2018 shows the scenery of the sunflower field in Wuyuan County in Bayannur, north China's Inner Mongolia Autonomous Region. The sunflower is the major economic crop in Wuyuan County and the scenery of sunflower field attracts many tourists. (Xinhua/Peng Yuan)

Aerial photo taken on Aug. 9, 2018 shows the scenery of the sunflower field in Wuyuan County in Bayannur, north China's Inner Mongolia Autonomous Region. The sunflower is the major economic crop in Wuyuan County and the scenery of sunflower field attracts many tourists. (Xinhua/Peng Yuan)

Aerial photo taken on Aug. 9, 2018 shows the scenery of the sunflower field in Wuyuan County in Bayannur, north China's Inner Mongolia Autonomous Region. The sunflower is the major economic crop in Wuyuan County and the scenery of sunflower field attracts many tourists. (Xinhua/Peng Yuan)