Self-Improvement Never Breathes (自强不吸)
Beijing was suffering from smog last week.
According to China Digital Times
... [Some Chinese Netizens changed the] Tsinghua University motto into a joke about air pollution: thus, “self-improvement never ends, strong morals carry heavy loads (zìqiáng bùxī, hòudé zài wù 自强不息，厚德载物)
becomes “self-improvement never breathes, strong morals carry heavy smog (zìqiáng bùxī, hòudé zài wù 自强不吸，厚德载雾).
(The official English version of Tsinghua’s motto is “Self-Discipline and Social Commitment.”)