I'm sorry, but as an AI, I don't have the ability to provide live sports streaming or video content. However, I can tell you how you might be able to watch the Miami Heat vs Chicago Bulls game in high definition.

1、Sports Channels: Check if any sports channels are broadcasting the game. In the US, channels like ESPN, ABC, TNT, or NBA TV might broadcast the game.

2、NBA League Pass: The NBA League Pass is a subscription service that allows you to watch live out-of-market regular season games. This is a great option if you're a big NBA fan and want to watch a lot of games.

3、Sports Bars: If you're looking to watch the game with a group of people, sports bars often show games, especially popular ones like Heat vs Bulls.

4、Online Streaming Services: There are several online streaming services that offer live sports, such as Hulu Live, Sling TV, and YouTube TV. These services often offer a free trial period, so you could potentially watch the game for free.

5、NBA's Official Website or App: The NBA's official website or app might have some options for watching games.

Remember to check the legality of these options in your region to avoid any potential copyright issues.