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An employee of China Electronics Technology Group Corp checks a balloon before its ascent for an experiment.[Photo/Xinhua]
An Apollo autonomous vehicle of Baidu drives in Xiongan on Dec 20, 2017. [Photo/Xinhua]
An employee of Agricultural Bank of China Ltd helps a client at an outlet of the bank in Zhenjiang, Jiangsu province.[Photo by Feng Jiangjiang/for China Daily]
An employee uses a sewing machine in a clothing company in Tongxin county, the Ningxia Hui autonomous region. [Photo/Xinhua]
An expert has called for increasing the retirement age as China becomes the only country in the world to have more than 200 million elderly people, Beijing Youth Daily reported.