The case of ringing the bell, was presented at Yokohama Triennale 2020, consisting of performances and an installation. The work stems from Tan's possibly witness of a seemingly unsound man walking around with a bicycle bell ringing to get ahead in the congested crowd of Shibuya, Tokyo. Tan is interested in the contraption of a handheld ringing bell which he reimagined/reworked and performed in streets of various degrees of crowdedness during the Covid. Tan found poetry in the act of a bicycle bell mounted on a dead twig ringing because of the oxymoronic nature of calling to attention the audience to give way. To make aware of the presence so as to distance.  ​ The installation consists of an intervention in an architectural gesture where a live tree is planted under a concrete round opening with its canopy protruding. Tan mounted many bicycle bells on the branches with auspicious red strings attached for audiences' tugging. If the ringing of the bell on a dead twig earlier observes the temporal and spatial of urban pedestrians, here the swaying branches and rustle of the leaves from the wind on the other hand suggests a somewhat spiritual essence, not unlike the ringing of the bell at Shinto temple hung on roof purlin to call the attention of the gods for your prayers.