Suddenly, they heard the wailing of sirens arsing above the city.
In the beginning, it was just a vague sound, but as it was getting louder and louder, the people at the checkpoint started to lose their order.
Other people, who had not arrived at the checkpoint, were all blocked at the first and second line of defence.
"Thank… you, Mr.chu!" Zhou Tingyun was panting. She almost wasn't able to keep her back straight after a long and exhausting run. It almost consumed all her energies. After all, she hasn't been eating for almost two days now.
"Are you alright?" Chu Yunsheng had already deactivated the armour. He was startled when he saw her face was as pale as a dead person.
"Xiao Zhou, Xiao Zhou... It was because of us, she has not eaten for days, it's our fault! Our fault!" professor tang's wife gave out a long sigh.