In addition, the massive damage to infrastructure, such as roads, canals, irrigation and drainage systems, has been another drawback, particularly along the west coast of Sumatra.
The Liujiang is polluted because industries and the city drainage system directly discharge into it significant raw sewage and rainwater.
An increasingly volatile climate has led to more torrential rainstorms, but we have a drainage system, designed in Victorian times, that finds it difficult to cope with sudden rushes of water.
The city was even equipped with a drainage system, for a great many clay pipes were found beneath the narrow streets.
