### Chinese: 没想到当年看不起晶圆制造服务的巨头，如今却也要开始做晶圆代工。
### English: Unexpectedly, the giants who looked down on wafer manufacturing services back then have to start wafer foundry now.
### Errors: There is no error in the English translation.

### Improved English: Unexpectedly, the giant that looked down on wafer manufacturing services back in the days will also start to do wafer foundry now.
