[nogridbag]

That explains it. Yup these were some sort of official / govt documents. Thanks for the explanation!

Edit. I should have realized that. I just came back from China and my kids were watching a children's show with the following subtitles: "一二一二一二一二一二一二一二一二一二一二". Took me a while to realize the subtitles were not broken. The characters were marching chanting "one two one two..." :)