Speak to Foreman Raike at the Serpent's Heart in the Jade Forest.
You've done great here, kid. Thanks to you, we have quite a bit of extra jade, and I know just the someone who could use it.
My friend Foreman Raike is running the great statue project at the Serpent's Heart.
Bring a shipment of extra jade to him, and tell him his old friend Mann says hello. He'll be eagerly waiting your arrival.