This is the 2163rd most frequent Chinese word.
成都
Chengdu: A major city in Sichuan Province, China.
In this sentence, '成都' is used as a proper noun referring to a specific city in China.
我计划去成都旅游。
I plan to travel to Chengdu.
Here, '成都' is used metaphorically to denote the extent or degree of something.
问题的成都比我们预想的要严重。
The extent of the problem is more severe than we anticipated.
In this example, '成都' refers to the depth or sophistication level in relation to learning.