这是一个捕捉PTSD患者从前和现在表情上变化的系列作品，从而表达那些其他人不会察觉到的变化和PTSD患者内心煎熬的表象。

This is a series of works that captures the facial expressions (before and in the present) of people with PTSD, in order to express the unignorable changes of PTSD, and the suffering in their hearts.