Ophiopogon Japonicus 麦冬 (mai dong)
Common name is mondo grass. A common herb to used in TCM formulas which also can used to brew tea. Ophiopogon Japonicus may help moisture the lungs and stomach to reduce to dry cough and excessive thirst.
image: By Shabicht - Own work, CC0, https://commons.wikimedia.org/w/index.php?curid=158448846