In earlier days, the majority of schools and athletic centers in the ROC surfaced their tracks and baseball diamonds with either crushed brick or cinder. In fair weather the air was filled with dust and grit and when it rained the surfaces were pocked with puddles, causing numerous headaches and much inconvenience for their users.
早先，國內一般學校、運動場所的跑道和球場，都是鋪設紅磚粉或煤渣，天晴時有塵沙滿天飛的困擾；一下雨就會積水或流失，造成水溝阻塞、路面不平，相當不方便。