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Beijing's first automobile maintenance contest between students from China and Germany's vocational education sectors was held early this week.

Before the pandemic, the use of dollar bills in the US had already dropped from 33 percent to 26 percent over the past four years, according to CBS News. A handful of businesses have gone totally cashless nationwide. PayPal, Apple Pay, Google Pay and other contactless methods also have become increasingly popular.

Because there are not enough local farmhands to plant rice seedlings on the Sanjiang Plain, groups of migrant workers descend on the area for several weeks each year. Most of them come from rural parts of Harbin, Qiqihar and Suihua, in Heilongjiang.

Beijing will hold a test event, its first in a series entitled "Experience Beijing", for the 2022 Winter Olympics in February.

Before the first image of a black hole could be added to the treasure trove of mankind's greatest scientific achievements in April, scientists responsible for processing it had a big problem: They had to piece together the image from half a metric ton of hard drives holding around 5 million gigabytes of data.