Wang Pu also gave an example: "In the past, the Yellow Emperor blew a nine-inch-long bamboo pipe, obtained the positive sound of the Yellow Bell, cut off half of it to become a clear sound, doubled the length to become a slow sound, and used the method of increasing or decreasing one-third of the length to produce a twelve-tone rhythm. The twelve tones take turns as the palace sound, and each can produce seven tones, becoming a uniform. There are a total of 12 equals and 84 tones, so that all the equals and tones are complete. However, due to the doom of the Qin Dynasty's eradication of academics, few people who studied music in the past generations were able to use it. In the era of Taizong of the Tang Dynasty, Zu Xiaosun and Zhang Wen took the examination to correct Yale, with 84 tunes; An Lushan and Shi Siming made a rebellion, and the musical instruments and musicians lost eight or nine tenths, and when they rebelled in Huangchao, they were gone. At that time, there was Dr. Yin Yingsun of Taichang, according to the "Examination of the Work Record", 12 casting bells, 240 chimes, and the stone chime was set by the priest Xiao Chengxun, and now it is hanging. Although there are bells and chimes, there is no corresponding harmony at all, and the chimes do not ask what the rhythm is, but they are just beaten in a loop, and the chimes and chimes are hung in vain. Musical instruments of various textures, such as silk, bamboo, and earth, also have only seven sounds, called the Palace of the Yellow Bell, and there are nine pieces that have been preserved. Check nine tunes, three tunes are in tune, and six tunes are mixed with various tones; There is no greater abstinence of music than it is today. ”

In the end, Wang Puyi pointed to it: "Your Majesty's martial arts have been outstanding, and he has begun to pay attention to the revitalization of ritual music, because his subordinates have learned the art of Lu, so he published ancient and modern music records, and ordered his subordinates to discuss and study. His Majesty cautiously followed the ancient method to determine the size with black millet grains, and the nine inches long and three points in diameter were used as the Yellow Bell Rhythm Pipe, which corresponded to the sound of the Yellow Bell today. Based on this calculation, the twelve-tone rhythm is obtained. Because of the alternating blowing of many rhythms, it is inconvenient to use the listening voice. So the production of the law, a total of thirteen strings, its length of nine feet, all the sounds should be in line with the sound of the yellow bell, in turn set the string yards, tune into Lin Zhong, Taituan, Nanlu, Gu Xi, Ying Zhong, Ruibin, Da Lu, Yi Ze, Jia Zhong, Wu shot, Zhong Lu and other eleven tones and Huang Zhong Qingsheng, take turns to use seven rhythms to become a uniform. As the main tone of even. The first is the palace, followed by the sign, the Shang, the feather, the horn, the change of the palace, and the change of the sign. The sound of the main note is made, and finally it returns to the rhythm of the original note. The overlap should be harmonious and not chaotic in order to form a tone, a total of eighty-one tones. This method has been lost for a long time, and it is due to the opinions of his subordinates. Request to convene a hundred officials to evaluate their gains and losses. ”

So Chai Rong issued an edict. The state of Zhou adopted the method of the palace played by Wang Pu. All the officials agreed, thinking that it should be like this, so they implemented it.

The third day of the first month of the sixth year of Xiande.

Zhou Guojian Taifu and the palace all inspected Zhao Kuangyin to play the emperor, "According to the report from the front, tens of thousands of troops who fled north blocked the south again, and the troops were directly designated as Nanxia Prefecture. ”

On the same day, the emperor issued an edict to order the inspector Taifu and the front of the palace to check Zhao Kuangyin to lead the front of the palace to ride the iron cavalry and control the crane four compartments with a total of 50,000 people on the expedition. Garrisoned in Xiazhou to resist the blockade army, the accompanying generals were selected by Zhao Kuangyin for inspection.

Three days later. Zhao Kuangyin took his Yishe brothers and 50,000 forbidden troops out of the west of the city, and after the army reached Cizhou, he left 20,000 forbidden troops to return to Kaifeng, while Zhao Kuangyin led his brothers and 30,000 forbidden troops north to Xiazhou.

Since then, Zhao Kuangyin has become the new and unknown envoy of the five states, and the fact has become independent of the Zhou court.

And Chai Rong began to step up preparations for the Northern Expedition of the Zhou Kingdom, but his health was getting worse and worse.......

On the 10th day of the first month of the sixth year of Xiande, Chai Rongjia conferred the post of privy envoy of Wang Park. and recruited 100,000 Ding Zhuang people from the country, filled them into the forbidden army, and stepped up training. Since then, the number of Zhou forbidden troops has expanded to 250,000.

At the beginning of February, he ordered the privy envoy Wang Pu to go to Heyin to inspect the Yellow River embankment and erect a sluice gate at Biankou. He also ordered Han Tong and Wu Tingzuo to send tens of thousands of people in Xu, Su, Song, Shan and other prefectures to Jun Bianshui, and Han Lingkun guided Bianshui from Kaifeng to Caishui to the east, so as to pass through Chen and Yingzhou Caoyun Road; Levy and slip, milli two state Dingfu, by Yuan Yan supervised the dredge of the Wuzhang canal, the east flow of Dingtao, Liangshan into the water, to Tongqing, Yunzhou Caoyun.

On 12 February, the Kaifeng Prefecture reported that the land for which the tax was levied was originally more than 102,000 hectares, but now the excess land has been verified, and the additional land has been verified, and the later Zhou Shizong decreed a reduction of 38,000 hectares of tax tax. The envoys of the prefectures inspected the seedling fields and returned, and the proportion of tax reduction and exemption for the surplus fields was modeled on that of Kaifeng Prefecture.

Mid-March.

Chai Rong's body has already made him obviously feel that the limit is coming, and he said that his body knows it, and Chai Rong wishes he didn't know.

After Chai Rong left Zhao Kuangyin, he had already demoted or transferred officials who had close ties with Zhao Kuangyin from the DPRK and China to Kaifeng, or even removed from their official posts and expelled them from Kaifeng. It's not that Chai Rong is afraid that he won't be able to suppress these people, but that he is afraid that once he dies, his son will not be able to suppress these people.

Chai Rong was very frightened in his heart, his son was just seven years old, if the officials of the DPRK and China colluded with the five states of Dingnan, then his son's throne might be shaky.

To be on the safe side, Chai Rong began to prepare.

At the end of March, Chai Rong decreed that the prince Chai Zongxun was appointed as the king of Liang and concurrently led the general of Zuo Wei, and Chai Zongrang was appointed as the Duke of Yan and concurrently led the general of Zuo Xiaowei.

At the same time, she was appointed as the queen, she was the sister of Queen Xuanyi, she finally became a little Fu after the concubine, but she was full of joy but she didn't know that she was about to be promoted to the queen mother.

Although Chai Rong guessed that his deadline was approaching, he didn't expect that this day would come so quickly.

Chai Rong planned to make these arrangements in his heart, and then carry out the Northern Expedition, so as to make his last contribution for his son to sit on the throne safely.

In late April, Chai Rong decided to go on a northern expedition to block Bu Weike. Wang Pu and others persuaded each other bitterly, but Chai Rong insisted on it as much as possible.

Chai Rong decided to take the sick with him, with Xiang Xun as the deputy marshal, Zheng En as the vanguard, and Wang Pu as the entourage, and handed over the affairs of the court to the four prime ministers to act together. Chai Rong left 100,000 forbidden troops in Kaifeng, and he took 150,000 forbidden troops to the west to join forces with Xiang Xun and Zheng Enbu, and then went on a northern expedition. The date of departure was set for May 15, a month later. At the same time, he sent an envoy to Jinling Mansion, hoping that the Ming State could jointly send troops to the Northern Expedition to stop the divination.

Unexpectedly, ten days later, it was supposed to be the time for Chai Rong to recruit soldiers on the school field, and Chai Rong fell ill.

Chai Rong's illness made all the imperial doctors helpless, and no one knew what the cause of Chai Rong's illness was, so they could only blame the emperor for the emperor's hard work for state affairs and his worries.

As a result, the Northern Expedition was postponed indefinitely by the Zhou court.

It was on this day that Chai Rong's messenger arrived in Jinling Mansion.

In the past nine years of recovery, the economy of the Ming Kingdom has recovered to the greatest extent in the past year, and the development of commerce and trade has greatly shortened the recovery period. (To be continued......)