旧脸谱
[jiù liăn pŭ]
A 'face mask' here doesn't refer to the modern masks used during epidemics but the traditional painted masks of Peking Opera (a classic form of Chinese drama), which express the roles or personalities of different figures. 'Old Mask' could represent nostalgia, implying respect for cultural legacies or expressing a certain character trait or story through a traditional artistic image.