Thirty-Fifth of May
From China Digital Space
五月三十五日 (wǔ yuè sān shí wǔ rì): The thirty-fifth of May
In China, important dates are usually referred to by the date on which they occurred. Thus, the Tiananmen Square Incident is usually referred to in Chinese as the “June 4th Incident” or simply as “June 4th” or “six, four.” However, June 4th is a sensitive word that alerts web censors, so netizens sometimes use the word “May 35” to refer to the Tiananmen Square Incident.
See CDT's retrospective look at June 4th.