How to enable the self-learning function for pinyin IME when using traditional Chinese

Hello 瑞和顏,

I'd like to know more about this concern, please provide the following information:

• Is this your first time to encounter this issue? If so, did you make any changes to your computer's configuration prior to this?
• Are you getting any error messages?
• Can you please confirm the current build of your Windows 10?
  (Type winver into the Cortana search box, then hit Enter.)

We're looking forward to your response.

Hello 瑞和顏,

I'd like to know more about this concern, please provide the following information:

• Is this your first time to encounter this issue? If so, did you make any changes to your computer's configuration prior to this?
• Are you getting any error messages?
• Can you please confirm the current build of your Windows 10?
  (Type winver into the Cortana search box, then hit Enter.)

We're looking forward to your response.

1. This is our first time to install MS Pinyin. I didn't make any changes to the settings.

2. No any error messages encountered.

3. My Win 10 version is 1709 (OS Build 16299-192)

 I did a lot of google searches, but found no answer to the problem. 

Thanks for the update. We encourage you to submit your issue using the Feedback Hub, so we can do a further investigation on this. Submitting your feedback in Windows Feedback hub will help us gather information regarding your concern so we can determine what's causing the issue. Your feedback will also help collate bugs and known issues, as well as the suggestions that will help improve the Windows operating system. Using the collected data, the engineers will come up with an update that will improve Windows operating system.

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