Beijing (AFP) – A man in southwest China doused himself with petrol and tied firecrackers around his waist because authorities cancelled his birthday banquet as a precaution against spreading the coronavirus.The Chongqing resident, a 59-year-old surnamed Wang, had planned to hold a banquet with 10 tables late last month, state news agency Xinhua reported Wednesday.But with authorities across China restricting public gatherings to contain the outbreak, officials told Wang to cancel the party.Hundreds of millions of people across China face restrictions and interruptions to their lives due to ef…