你好李孔先生 Hello lee kong,

I found 节约 means economize, save
To check it I always look for it in google and I found this http://www.jieyue.net/, a Chinese site about saving?
If you look for pictures with 节约, then indeed you will find pictures concerning saving.
[节 means to knot, join 约 means to make an apointment, so to make a apointment to tie a knot in your pocket as to save money hahahaha)

Hope this answers your question.

我在词典里找到“节约”的意思是
留存[保持]钱，不耗费钱。
如果你在谷歌(GOOGLE)找关于“节约”你可以
猜“节约”的意思。
(要是我写错了你得名字，抱歉我)

万事如意

陆蓝克