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Technicians celebrate after the landing of Chang'e-4 lunar probe at the Beijing Aerospace Control Center in Beijing, capital of China, Jan. 3, 2019. (Xinhua/Jin Liwang)
 
 
Technicians celebrate after the landing of Chang'e-4 lunar probe at the Beijing Aerospace Control Center in Beijing, capital of China, Jan. 3, 2019. (Xinhua/Jin Liwang)