Hey @davidwang0724 thanks for sharing this. It's not good to hear that you've lost your SIM card which is impacting your time overseas. I do hope you're safe.
We're unable to send a SIM card overseas however, if you had a friend or colleague currently residing in Australia, they could send this to you at the international address. From there, you'll need to call our team from the overseas number +61 2 8082 5678 and they can run through the set up and have it activated.