More than 30,000 tourists visited the Forbidden City that day despite of the heavy rain, according to a staff member of the Forbidden City.Built during the Ming dynasty, the Forbidden City was well maintained over the past few centuries. Even after hundreds of years, the drainage system still functions well.The ancient drainage system also works together with the modern system to regulate the water level of the Inner Golden River, added the expert, under cooperation between the Palace Museum and the Beijing Water Authority, according to the report. If the ancient system is damaged, it is quickly repaired by staff, the expert added. Drainage pipes lead to the Inner Golden River outside of the city. "But the rebuilt areas only takes up less than 10 percent of the whole system."

Source: The Nation Bangkok July 22, 2016 03:33 UTC