Install the Code2000 font to view the results.
mongolian in chinese
Test passes if the order and rotation of Mongolian characters is the same.
Assertion: Setting writing-mode to tb-rl will cause Mongolian text embedded in vertical Chinese to flow down the page, with letters in the normal vertical orientation, and wrap to the left.
= means you should check that the test and reference graphic look the same. If not, check the instruction text.