Correct

一程子

/ yī chéng zǐ / 
Strokes

Example

As a Noun

period of time

1
Lǎotàitai
老太太
de
的
bìng
病
zhè
这
yī
一
chéngzǐ
程子
dàhǎo
大好
le
了
  
。

The old lady's condition has been improving over the past few days.