By Martin Quin Pollard and David Stanway BEIJING/SHANGHAI (Reuters) -China’s capital Beijing closed more businesses and apartment blocks on Friday, with authorities ramping up contact tracing to contain a COVID-19 outbreak, while resentment at the draconian month-long lockdown in Shanghai continued to grow. In the finance hub, fenced-in people have been protesting against the lockdown and difficulties in obtaining provisions by banging on pots and pans in the evenings, according to a Reuters witness and residents. A video shared on social media, whose authenticity could not be immediately veri…