A judge assesses a kumquat during a competition in Rong'an, south China's Guangxi Zhuang Autonomous Region, Dec. 28, 2017. The kumquat competition was held in Rong'an to encourage the development of local kumquat industry.(Xinhua/Tan Kaixing)

Judges give scores on kumquats during a competition in Rong'an, south China's Guangxi Zhuang Autonomous Region, Dec. 28, 2017. The kumquat competition was held in Rong'an to encourage the development of local kumquat industry.(Xinhua/Long Tao)

Judges give scores on kumquats during a competition in Rong'an, south China's Guangxi Zhuang Autonomous Region, Dec. 28, 2017. The kumquat competition was held in Rong'an to encourage the development of local kumquat industry.(Xinhua/Tan Kaixing)

People attend a kumquat competition in Rong'an, south China's Guangxi Zhuang Autonomous Region, Dec. 28, 2017. The kumquat competition was held in Rong'an to encourage the development of local kumquat industry.(Xinhua/Long Tao)