SINGAPORE — If you're a Line user in Asia, chances are you've seen Meow the Tabby Cat, one of the Japanese ... to students 18 or older, to submit designs that show "a unique Singaporean way ...

No erasing. No lifting. No limits. In this extreme drawing test, I take on the ONE LINE ART CHALLENGE — but this time, it’s 3 hours straight with just a pencil and a whole lot of patience.