At Feitsui, workers bored a tunnel between holes made by the water drills, a task requiring the full efforts of their cement-covered bodies for ten hours at a time under adverse weather conditions.
廊道中溫度很高、空氣渾濁，工人們灰頭土臉地為岩縫「洗澡」，水刀、水鑽噴出的水打在岩壁上，使得整個廊道水霧瀰漫。澆灌混凝土時，高壓泵浦打出的水泥漿，也會濺得人滿身滿臉。除了例行工作的辛苦，工作人員還得與天氣搏鬥。