Requirements: the chests will be received by players level 15+

The main reward is the University College of Technology Sarawak (4,100 coins, 1-3 energy, 1-3 daffodils every 24 hours, size 10*10, can be placed anywhere)

Each chest can be opened for 9 Spring keys.

There are 3 ways to get Keys:

Completing the quest:

Knick-Knack Trader I (3 keys)

Collect 8 Planks (Cargo Port)
Collect 14 Backpacks (summer house, upgraded summer house)
Collect 6 Air Balloons (collect profit from friends cities with coin or clock, do not drop every time)

Knick-Knack Trader II (3 keys)

Collect 14 Packs of seeds (collect profits from Flower Kiosk, Upgraded Flower Kiosk)
Collect 14 Towels (collect profits from Recreational Cottage, Upgraded Recreational Cottage)
Collect 17 Valves (Collect profits from Premium Cottage)

Knick-Knack III (4 keys)

Collect 13 Pistons (Collect profits from Shoe Shop, Upgraded Shoe Shop)
Produce 26 Parquet (click on construction factory to produce)
Ask friends for 6 Ancient books

2. Collect profits from the following buildings:

The Bridge- 1 key every 24 hours;
Beauty Fair - 1 key every 8 hours;
Sienna Cathedral 1-4 key every 23 hours
Leeds Corn Exchange 1-4 keys every 23 hours

3. Use the sale offer!

Special offer with the University College of Technology Sarawak chest event

Leeds Corn Exchanges 4300 coins, 1-3 energies, 2-3 daffodils, 1-4 Spring Keys every 23 hours during the promotion
Sienna Cathedral 4200 coins, 1-3 energies, 1-4 daffodils, 1-4 Spring Keys every 23 hours during the promotion
Bran Castle 4400 coins 2-3 energies every 23 hours
Arya Devaker 4000 coins, 2-4 energies every 24 hours
Château des Réaux 4500 coins, 1-4 energies every 22 hours
Bishop Castle 4400 coins, 1-4 energies every 23 hours