1, players need to increase the goodwill of the small Mar tribe to 40,000.
It was agreed with Lausanne that you need to buy crystals to get 50 taels of silver.
3. At the coordinates of the map (12,6), the merchant of Yongbubao bought this crystal for 400 taels and gave it to Lausanne.
4. After waiting for 10 minutes, talk to Lausanne again and get the "shock cloud marksmanship".