“The wise ruler knows this. Therefore he concentrates the energies of his people upon agriculture. He levies light taxes. He extends the system of grain storage, to provide for his subjects at times when their resources fail.” * * * * * [Sidenote: LI LING] The name of LI LING (second and first centuries B.C.) is a familiar one to every Chinese schoolboy. He was a military official who was sent in command of 800 horse to reconnoitre the territory of the Huns; and returning successful from this expedition, he was promoted to a high command and was again employed against these troublesome neighbours. With a force of only 5000 infantry he penetrated into the Hun territory as far as Mount Ling-chi (?), where he was surrounded by an army of 30,000 of the Khan’s soldiers; and when his troops had exhausted all their arrows, he was forced to surrender. At this the Emperor was furious; and later on, when he heard that Li Ling was training the Khan’s soldiers in the art of war as then practised by the Chinese, he caused his mother, wife, and children to be put to death. Li Ling remained some twenty years, until his death, with the Huns, and was highly honoured by the Khan, who gave him his daughter to wife. With the renegade Li Ling is associated his patriot contemporary, SU WU, who also met with strange adventures among the Huns. Several Chinese envoys had been imprisoned by the latter, and not allowed to return; and by way of reprisal, Hun envoys had been imprisoned in China. But a new Khan had recently sent back all the imprisoned envoys, and in A.D. 100 Su Wu was despatched upon a mission of peace to return the Hun envoys who had been detained by the Chinese. Whilst at the Court of the Khan his fellow-envoys revolted, and on the strength of this an attempt was made to persuade him to throw off his allegiance and enter the service of the Huns; upon which he tried to commit suicide, and wounded himself so severely that he lay unconscious for some hours. He subsequently slew a Chinese renegade with his own hand; and then when it was found that he was not to be forced into submission, he was thrown into a dungeon and left without food for several days. He kept himself alive by sucking snow and gnawing a felt rug; and at length the Huns, thinking that he was a supernatural being, sent him away north and set him to tend sheep. Then Li Ling was ordered to try once more by brilliant offers to shake his unswerving loyalty, but all was in vain. In the year 86, peace was made with the Huns, and the Emperor asked for the return of Su Wu. To this the Huns replied that he was dead; but a former assistant to Su Wu bade the new envoy tell the Khan that the Emperor had shot a goose with a letter tied to its leg, from which he had learnt the whereabouts of his missing envoy. This story so astonished the Khan that Su Wu was released, and in B.C.. 81 returned to China after a captivity of nineteen years.