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Biden expects to face pointed questions about race in particular, having stumbled in the opening debate in June when confronted by Harris over his record on school integration. Booker in recent days has seized on Biden's decades-old support for criminal justice laws that disproportionately hurt minorities.

Besides Zang, director of the commission's research department, Yue Zhongming, director of its legislative planning department, was also named as the spokesperson.

Bezos said that based on his observations, people who are right a lot, listen a lot. And they are also open to changing their mind.

Bezos, in a statement, says a team using deep-sea sonar has found the engines on the ocean floor. “We don’t know yet what condition these engines might be in – they hit the ocean at high velocity and have been in salt water for more than 40 years.”

Between 2015 and 2017, 1.64 billion yuan (8 million) had been invested to install or renovate more than 70,000 toilets at tourist sites, according to the Ministry of Culture and Tourism.