Yumi Stynes Instagram – Hello, we are Yumi and Hsin-Ju. We have teamed up to solve the world’s problems. Please write your problem on a piece of paper and slip it into the letterbox📮. The box is emptied at the end of each day. No problem too big, no grievance too petty. In the absence of a letterbox, set fire to your letter and usher the smoke 💨 in our direction. We will understand.