How does Wuhan China Mobile change its tariff through SMS?

Wuhan M-Zone SMS Package 10 RMB Preferential Package KTDXTC 10

Wuhan M-Zone SMS Package 16 yuan Discount Package KTDXTC 16

Wuhan M-Zone SMS Package 26 yuan Discount Package KTDXTC26

Edit blank information or send any undefined content to 10086, and return to the main menu (2-digit code), then send corresponding codes to return to the submenu, which contains related business functions and instructions, and send corresponding business instruction codes to handle various businesses.