Hello boss, can you help me? I have a question, why can't I receive follow-up tasks even though I have the Book of Forging? I can strengthen it to 13. To strengthen it, I need the Master's Furnace. I have never understood it, please explain [expression_prayer][expression_prayer][expression_prayer][expression_prayer][expression_prayer][expression_prayer][expression_prayer][expression_prayer][expression_prayer] ][expression_prayer][expression_prayer][expression_prayer]

If you have the Book of Forging, you can't complete the task. You can only strengthen it to level 13.