There are several ways to find a specific person in Douyin's live broadcast room:

1. Search function: Enter the other party's nickname, Douyin account or related keywords in the search bar above the Douyin homepage and click the search button. Select the "Users" tab in the search results to find a list of users related to the keyword. If you know the other party's specific Douyin account, you can also find the other party's personal homepage by directly entering the Douyin account in the search bar.

2. Follow list: If you have already followed the other party's Douyin account, you can go to your personal homepage, click the avatar or Douyin account in the upper right corner, and then select "Follow", find the other party in the follow list, and click the other party's avatar to enter their personal homepage.

3. Recommended page: Swipe up on the Douyin homepage to see a series of recommended videos. If the other party has recently had an event or live broadcast in the live broadcast room, it may appear in the recommended list, and you can find the other party's live broadcast room.

Please note that the above methods may require the other party to set up a public profile on Douyin or conduct relevant live broadcast activities. If the other party maintains privacy settings on Douyin or does not conduct live broadcast activities, it may be difficult to find their live broadcast room. In addition, you also need to make sure that you abide by Douyin's user code of conduct and community guidelines and respect the privacy and rights of others.