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Beijing's 120 major commercial service companies saw overall retail sales of 780 million yuan (4 million) on Saturday — the sixth day of the seven-day National Day holiday period — up 8.8 percent year-on-year, according to the municipal commission of commerce on Sunday.

Beijing has established the National Innovation Center by forging extensive partnerships between universities and companies. The idea is to help address technological bottlenecks that impede commercial applications of 3D printing.

Beijing, host of the 2008 Summer Olympics, and Zhangjiakou were picked in 2015 to host the 2022 Winter Olympics. Beijing will be the first city to hold both Summer and Winter Games.

Beginning with music and dance videos, Douyin has since expanded its reach to various other categories, such as gourmet food, exercise, travel and culture, as Douyin said on its WeChat account. Now, more than 40 percent of the users on Douyin are aged 24-30, compared with the earlier group of major users falling in the range of 18-24 years old.

Before the park was established, each reserve worked on its own, and that wasn't good for panda conservation, he said.