Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Which Hanyu Pinyin has a GDP in 2011 larger than 688.02 billion yuan and a regional population of 8,700,400 in 2010?

### Inputs:
table_name: table, columns: ['City', 'Hanzi', 'Hanyu Pinyin', 'Regional Population(2010)', 'GDP(2011)(billion yuan)']

### Response:
SELECT Hanyu Pinyin FROM table WHERE GDP(2011)(billion yuan) > 688.02 AND Regional Population(2010) = 8,700,400