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

### Instruction:
How old was the official with Chinese name  孫明揚?

### Inputs:
table_name: table, columns: ['Romanised name', 'Chinese name', 'age at appointment', 'Portfolio', 'Prior occupation']

### Response:
SELECT age at appointment FROM table WHERE Chinese name = 孫明揚