Strong rule: style --- Simple 2D cartoon, hand-drawn sketch, flat colors ---. A majestic old man with a long white beard rises from the middle of the river, holding a gleaming golden axe high in the air. The woodcutter watches from the riverbank with wide, amazed eyes. The water ripples around the spirit, and the lighting is bright and cheerful, highlighting the treasure.
Character appearance reference (MUST match exactly):
- Woodcutter: A cartoon man with messy black hair and large round glasses. He wears a bright yellow short-sleeved t-shirt and vibrant purple trousers. His expression is often exaggerated, showing effort or greed. The style is 2D hand-drawn animation with thick black outlines and flat, saturated colors. He is of average build and appears to be in his late 20s, set against a simple forest background.
- River Spirit: An elderly man with a very long, flowing white beard and matching long white hair. He wears a simple yellow robe that appears to blend with the water. He has a calm but stern expression. He is depicted as a magical being emerging from the center of a blue river. The style is consistent with a classic 2D cartoon, featuring bold outlines and a hand-drawn feel.
