How to open the yellow diamond with Unicom card?

if you want to use Unicom card to open Tencent's yellow diamond business, you can log in to Tencent's recharge center first and choose to open the yellow diamond aristocratic business /ipay/index.shtml? n=3& c=xxjzghh,xxjzgw& Ch=qdqb,kj is as follows:

Then choose the mobile phone opening method and enter your Unicom mobile phone number. If your area supports Unicom users to open, the system will prompt you, and you can open it according to the system prompts.

if it is not supported, the following prompt will appear after entering the Unicom number. You can only choose other ways to open it, such as bank card and Tenpay.