The reason why Tsingtao beer is used for the green bottle of Dabai pear is that the sales volume of Dabai pear drink was low when it was first produced. In order to make a bold attempt, the beverage factory decided to use beer bottles as the packaging of pear juice drinks. This approach achieved surprisingly good results after trying it, so the Dabai Pear drink was renamed "Dabai Pear" and is still used today.