Can drink. It is best to finish the tea bought home within half a year, because the quality of West Lake Longjing tea is the best in this period. After half a year, the taste of tea will fade, and the contents will slowly lose. Tea stored for more than one and a half years or West Lake Longjing is moldy and deteriorated due to improper storage, so it cannot be drunk. Longjing doesn't need to wash tea, but it needs to cool the boiling water to about 85 degrees Celsius before brewing, so as to avoid scalding the tea leaves when the boiling water temperature is too high.