Can I send a short message to China directly from my mobile phone in Thailand?

Anyway, it's ok to send short messages with the mobile phone card over there ~ But you received it here, and the country code in the displayed number is different. Thailand is 0066, so you should receive a number starting with "0066", which has less digits than China's mobile phone number.

However, if he uses GSM, the display should be no different.

In fact, if he uses GSM, you can try the mobile phone positioning network.

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"Mobile phone positioning network lbs.allfast.cn, can be located in GoogleEarth. Just locate in the webpage, enter your mobile phone number and click "Locate". You need to locate on GoogleEarth, enter your mobile phone number and click "Google Earth."