Hong Kong is set to allow travellers heading to mainland China through Shenzhen Bay Port to book [Covid](tag?_=covid) -19 tests online as residents continue to swamp the checkpoint and ignore the government’s advice to delay trips over the border. Shenzhen authorities also announced on Sunday a new measure to crack down on scalping of quarantine hotel rooms by allocating them through drawing lots following discussions with the Hong Kong government. Shenzhen Bay Port, one of just two land passenger crossings that remain open amid the pandemic, has been packed with crowds in the morning over the weekend after the Guangdong…