Several missals and other books about traditional mass in Chinese have been published after the Summorum Pontificum. But I am not sure how to buy them abroad.
(I wish I could show you some pictures and links of the missals, but the webside just said “sorry, new users can not upload images” and " Sorry, you can’t include links in your posts."…)
One of them is “便携拉汉对照脱利腾拉丁弥撒经书 Parvum Missale Tridentinum 1962 Sinice Explicatum - A Small Tridentine Missal, 1962, Explained in Chinese”, a Latin -
Chinese missal for Sundays and Feasts, published in mainland China. In fact it is not “parvum” at all, 30cm x 22.5cm, seemed to be an altar missal. More imformation about this missal can be find in “The Life and Work of Mgr. Li Jingfeng, Bishop of Fengxiang (Part 2)” from the website of the New Litergical Movement.
Another one is “彌撒常用經文 (羅馬禮特殊形式) The Order of Mass (Extraordinary Form of the Roman Rite)”, published by Vox Amica Press in Hong Kong, in Latin, English and Chinese, with Kyriale.
The Vox Amica Press has also published a book explaining the tradional mass, “彌撒聖祭圖解 (羅馬禮特殊形式) Holy Mass Illustrated (Extraordinary Form of the Roman Rite)”, in Chinese language only.
More books explaining traditional mass in Chinese language can be downloaded from Internet, they were all published before communists’ occupation of mainland China in 1949. As I am not allowed to show links here, just search " 弥撒祭义.pdf", " 弥撒诠要.pdf", “弥撒经文礼节讲义.pdf”, “特伦多拉丁弥撒辅祭手册.pdf” and “弥撒规程” "周年瞻礼经"etc.