1 subway

2 metro

1 subway station

1 hotpot

1 pot

2 pan

3 boiler

4 classifier: 口 kǒu

5 classifier: 只 zhī

1 surname Tie

1 lit. a piece of rat feces spoiled the whole pot of congee (idiom)

2 fig. one bad apple can spoil the whole bunch

1 lit. a piece of rat feces spoiled the whole pot of soup (idiom)

2 fig. one bad apple can spoil the whole bunch

1 don't act until the time is ripe (idiom)

1 one can't function properly on an empty stomach (idiom)

2 an empty sack cannot stand upright

1 If you work at it hard enough, you can grind an iron bar into a needle.

2 cf idiom 磨杵成針|磨杵成针, to grind an iron bar down to a fine needle (idiom); fig. to persevere in a difficult task

3 to study diligently