You can purchase the Direct Connect service directly from Tencent Cloud's official website.
This document describes how to do so in detail.

Purchasing a Connection

1. Go to Tencent Cloud's official website, log in and go to the Direct Connect product page.
2. Click Get Started to enter the Direct Connect Console.
   
3. Click +New on the Connections page.
   
4. Fill in the fields and click OK. After the application is approved, make the payment.
   

Note:
For specific directions, see Applying for a Connection.

Purchasing a Dedicated Tunnel

1. Go to Tencent Cloud's official website, log in and go to the Direct Connect product page.
2. Click Get Started to enter the Direct Connect Console.
   
3. Click +New on the Dedicated Tunnels page.
   
4. Fill in the fields and click Next to complete advanced configuration.
   

Note:
For specific directions, see Applying for a Tunnel.