The toll in the deadly blasts in a warehouse in China's Tianjin city has risen to 121, including 67 firefighters and seven policemen, the authorities said on Saturday.Fifty-four people, including 37 firefighters and four policemen, are still missing more than a week after powerful explosions ripped through warehouses in Tianjin port on the night of August 12, Xinhua news agency reported.Over 600 people, including 48 critically injured, remain in hospital. More than 151 people have been discharged, the authorities added.Tianjin police have conducted DNA tests on the 121 killed in the blast but only two have been identified so far.