Nio has resumed operations at its research and development center on the outskirts of Shanghai after a month-long shutdown due to the ongoing Covid-19 lockdown in the city, according to a report by Shanghai Oriental Television on Monday. The electric vehicle maker has called back 26 out of around 100 workers to the Shanghai research facility, where engineers work remotely on production planning for its manufacturing plant in Hefei in Eastern China. On Tuesday, the company also announced that its 200,000th vehicle rolled off the assembly line at its Hefei plant. [Shanghai Oriental Television, in Chinese]