About 2 Trademarks found that are owned by Yang Qingyi

Downlighters; Flashlights; Floodlights; Ceiling lights; Fairy lights for festive decoration; LED landscape lights; LED light strips for decorative purposes; LED lighting fixtures for indoor and outdoor lighting applications; LED lights for strings, flowers, branches and other ornamental decorations; LED mood lights; Light bulbs; Lights for use in growing plants; Spot lights; String lights for festive decoration; Strip lighting for indoor use

The wording YISSDA has no meaning in a foreign language.