iOS Which method is better for two lines title with different size font in button?

[mikezang]

I want to show Chinese character and pinyin(Chinese pronouncing) above character on a button like this
hànzì
汉字

I think there are some methods as below, do you think which method is easy and better? or please give your suggestion if you have good idea.

1. Create two buttons and handle action for two buttons

2. Create a label and a button and handle for button

3. Create a custom control and handle action for control