1 five

2 5

1 to substitute

2 to act on behalf of others

3 to replace

4 generation

5 dynasty

6 age

7 period

8 (historical) era

9 (geological) eon

1 representative

2 delegate

3 classifier: 位 wèi

4 classifier: 个 gè

5 classifier: 名 míng

6 to represent

7 to stand for

8 on behalf of

9 in the name of

1 ten

2 10

1 twelve

2 12

1 lit. count by fives and tens (idiom); to narrate systematically and in full detail

1 news pass quickly from mouth to mouth (idiom)

2 an infectious disease spreads quickly (old meaning)

1 bitten by a snake in one year, fears the well rope for ten years (idiom); once bitten twice shy

1 one day's sun, ten days' frost (idiom, from Mencius); fig. to work for a bit then skimp

2 sporadic effort

3 short attention span

1 one day's sun, ten days' frost (idiom, from Mencius); fig. to work for a bit then skimp

2 sporadic effort

3 lack of sticking power

4 short attention span