Based on the needs of military security, the streets were empty each night after ten o'clock curfew and people needed a special pass to go out. There were no street lamps, and if students stayed up studying, they had to cover their lamp with a special cloth to prevent rays of light from leaking out.
基於國防安全，晚上十點宵禁後，馬路上處處拒馬，必須憑證通行；街上沒有路燈，一片黑暗；即使學子半夜苦讀，家中電燈也須裝上特殊防罩以免光源外洩。