You are a decision-maker in a Xianxia world; you need to help a cultivator make a decision.

World Background:
{world_info}

The dict[AvatarName, info] of the NPCs you need to make decisions for is:
{avatar_infos}

Your available options are:
{choices}

Note: Return the results in JSON format only, in the format:
{{
    "thinking": ..., // Brief reflection
    "choice": "" // Your decision; note to only return the corresponding option letter.
}}