Nowadays, there is an interesting social phenomenon
in eastern Asia, particularly in Taiwan, Japan, and Hong
Kong. Many companies produce various kinds of
characteristic toys (dolls, mascots, cuddly toys, or called
”gongzi” in Mandarin) in order to get consumers’
attention and enhance the amount of sales (as shown in
Fig. 1). According to the marketing surveys or reports [7],
the characteristic toys can affect companies sales up by
10% to 30%. This outcome is fantastic for companies and
product designers, particularly in a competitive market.