China WuYi Mountain, Ltd. (WUYI: Pink Current) | Tier Change Sat, Apr 27, 2019 12:00 - China WuYi Mountain, Ltd. ( WUYI : Pink Current) - Tier Change - The symbol, WUYI, no longer is classified as Pink Limited. As of Sat, Apr 27, 2019, WUYI resides in the Pink Current tier. You may find a complete list of tier changes at otcmarkets.com .