Dian Wu, the top detail capturer of Bureau 201, suffered from severe PTSD due to the cross-border cultural relics robbery two years ago. Captain Rong Yin died in the fire to protect her and half of the "Southern Mountains and Seas Map" which contained the coordinates of top-secret mineral veins in southern Xinjiang. She retreated to a small border town and used fireworks to escape the past.
When the enemy reappeared, and when her former teammates rushed thousands of miles to pick her up, she finally overcame the trauma and returned to the team to continue her unfinished mission.
Purpose: Sacrifice and inheritance of faith