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An anecdote that has recently been doing the rounds tells of a taxi driver and a passenger getting into a conversation about the price of housing, whereupon the driver puts this paradox to his passenger: If graduates from the likes of Peking University and Tsinghua University do not earn enough to be able to afford a house in Haidian, why then bother buying one?

Amtrak's co-chief executive, Richard Anderson, acknowledged that a working Positive Train Control (PTC) system, which slows trains if they are going too fast, had not been installed on that stretch.

An employee installs brake pads on a BYD vehicle at the firm's assembly plant in Shenzhen, Guangdong province.[Photo/Agencies]

An attendee checks out Lenovo products during the 2019 Mobile World Congress in Shanghai. [Photo by Lyu Liang/For China Daily]

An Jun'ao, whose real name is Antonio, is from Mexico. He has had a strong interest in Chinese culture since he was a child. He enrolled in Beijing Language and Culture University to study Chinese in 2011.