frugal
jié jiăn 節儉
speculate in stocks
chăo gû piào 炒股票
to rise in price
zhăng 漲
contradiction
máo dùn 矛盾
gloomy/depressed
yù mèn 鬱悶
pen(cil)
bî 筆
money
qián 錢
grandson
sūn zi 孫子
to recommend
quàn 勸
sign the contract
qiān hé tóng 簽合同
volunteer work(er)
yì gōng 義工
mahjong
má jiàng 麻將
to earn money
zhuàn qián 賺錢