For many years Sung was engaged in a contest of wits and power in the marketplace. Now all he must do is concentrate on getting the dirt out of shoes, making old shoes look like new. This has given birth to a feeling of accomplishment and the notion that "old people are still useful."
以往在商場上鬥智鬥力，現在只要單純地把髒污除去，讓舊鞋煥然一新，「老人還是很有用」的成就感也油然而生。