Zi Collection, Page Position: Lower
Radical: Ten (shí)
Kangxi stroke count: 3
Page 155, Entry 20
Jade Chapters (Yupian): Pronounced shi. Means twenty combined. Now directly written as the character for twenty.
Broad Rhymes (Guangyun): The character nian, pronounced ru. Now written as the character for twenty.
Rhyme Compilation (Jiyun), Rhyme Meetings (Yunhui): Written as the character nian.
Explicating Written Characters (Shuowen): Nian means twenty combined. This is a simplified ancient form.
Xu Says: Since ancient times, the character for twenty has been simplified by combining the strokes into the character nian.