This set is kind of odd, because it was commissioned not by the Classical Gardens team, but by the local government where the garden is located. The story is that Shanghai Mint planned to issue this medal before the regular Classical Garden series, but the Classical Gardens team managed to persuade Shanghai Mint and the sponsor to postpone it till the entire Classical Garden series was completed. Moreover, this would be treated as "Classical Garden Series II", to distinguish it from those sponsored by the team. It is the only medal in this series, though.
Mintage is as follows:
Silver: 328
Antique silver: 200
Brass: 299
Antique brass: 299
I don't remember who the designer is, but the medal was engraved by the well-known master engraver Lin Feng.