A Secret Letter from my Father Walkthrough – Unlock the stainless box
2. Used this answer (5723) to unlock the stainless box inside the bookshelf and you will find a bottle of fertilizer in it.
a.Tap on (1) to stainless box.
b.Tap on (2) to answer.
c.Input 5723 (3) to unlock the stainless box.
d.Tap on (4) to take the fertilizer.
e.A bottle of fertilizer.