Hishou: 77 years old, the cursive character for hi looks like seventy-seven
Mishou: 88 years old, the character for rice looks like eighty-eight
Baishou: 99 Years old, the word "hundred" is one less and the horizontal line is white.
Chashou: 108 years old. The cursive prefix of the word "tea" represents twenty. There are eight and ten below. One stroke and one stroke are eight, and the total is 108.