Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: A Chinese entrepreneur has quit his well-paid day job to revive the dying art of Chinese sword making. Jia Huaijin, 33, now hand-makes swords in rural China that sell for up to £22,000 each – nearly 18 times the monthly salary of Chinese president Xi Jinping or the average price for a 750-square-foot flat in Shanghai. Mr Jia uses the 2,000-year-old technique to make the traditional swords, which are highly sought after by international collectors from as far as Canada, reports The People's Daily Online. Warrior: Mr Huajin looks like he could have time travelled from the Han dynasty Hammering away: The molten metal is forged and folded to create the swordJia Huaijin aspires to bring back 2,000-year-old sword making techniqueEach sword is worth 18 times the monthly salary of the Chinese presidentBlades are hand-crafted from steel that is 3mm thick and are razor sharpSword fanatics from as far as Canada have bought the expensive replicas 
 Question:Swords feature prominently in ancient Chinese history and the blades made by Mr Jia would have been the type used by warriors in the _.

Han dynasty