过了城门，我们才算是真正进了城。城门上那些钉也大有讲究，横7竖9，-

过了城门，我们才算是真正进了城。城门上那些钉也大有讲究，横7竖9，- -共63颗，说明这里还不算是最高级的。如果是皇宫大院，那横竖都得是9颗了，-共81颗。因为九是个位数的最大值，古代人把九九八十-看作是阳数之首，所以含有“至尊"的意思，也象征了封建王权的至高无上。更有意思的是，在《清明上河图》的原作中，. 上善门的前面两个字被作者隐藏了起来，只是点了两个点。不过据史料考证，《清 明上河图》所描绘的是东京开封东南部的景象。当时，开封东南有一个下水门];也称东水门，它的北边是通津门，南边就是.上善门。东水门的水是从中间穿过城i门洞流进城内去的，而《清明上河图》中的河水却是从城门的正前方流过的，由此推断，这座城门应该是上善门。这一论断是否合理，还值得深思。游客朋友如果有兴趣，也可以加入到讨论的队伍过了城门，我们才算是真正进了城。城门上那些钉也大有讲究，横7竖9，- -共63颗，说明这里还不算是最高级的。如果是皇宫大院，那横竖都得是9颗了，-共81颗。因为九是个位数的最大值，古代人把九九八十-看作是阳数之首，所以含有“至尊"的意思，也象征了封建王权的至高无上。更有意思的是，在《清明上河图》的原作中，. 上善门的前面两个字被作者隐藏了起来，只是点了两个点。不过据史料考证，《清 明上河图》所描绘的是东京开封东南部的景象。当时，开封东南有一个下水门];也称东水门，它的北边是通津门，南边就是.上善门。东水门的水是从中间穿过城i门洞流进城内去的，而《清明上河图》中的河水却是从城门的正前方流过的，由此推断，这座城门应该是上善门。这一论断是否合理，还值得深思。游客朋友如果有兴趣，也可以加入到讨论的队伍

After the gate, we really enter the city. Those nails on the city gate are also very particular. There are 7 horizontal nails and 9 vertical nails. There are 63 nails in total, which shows that they are not the most advanced. If it's a palace compound, it's going to have to be nine vertically and horizontally - a total of 81. Because nine is the maximum number of single digits, ancient people regarded ninety-nine and eighty as the first number of Yang, so it means "supreme", which also symbolizes the supremacy of feudal monarchy. What's more interesting is that in the original picture of the river at Qingming Festival, the two words in front of shangshanmen are hidden by the author, only two points are highlighted. However, according to historical materials, "Qingming Riverside" depicts the southeast of Kaifeng, Tokyo. At that time, there was a water gate in the southeast of Kaifeng; Also known as dongshuimen, it is Tongjin gate in the north and Shangshan gate in the south. The water of dongshuimen flows into the city through gate I in the middle, while the water in the picture of Qingming River flows directly in front of the gate. It can be inferred that this gate should be Shangshan gate. Whether this conclusion is reasonable or not is worth pondering. If tourists are interested, they can also join the discussion team. After passing the gate of the city, we can really enter the city. Those nails on the city gate are also very particular. There are 7 horizontal nails and 9 vertical nails. There are 63 nails in total, which shows that they are not the most advanced. If it's a palace compound, it's going to have to be nine vertically and horizontally - a total of 81. Because nine is the maximum number of single digits, ancient people regarded ninety-nine and eighty as the first number of Yang, so it means "supreme", which also symbolizes the supremacy of feudal monarchy. What's more interesting is that in the original picture of the river at Qingming Festival, the two words in front of shangshanmen are hidden by the author, only two points are highlighted. However, according to historical materials, "Qingming Riverside" depicts the southeast of Kaifeng, Tokyo. At that time, there was a water gate in the southeast of Kaifeng; Also known as dongshuimen, it is Tongjin gate in the north and Shangshan gate in the south. The water of dongshuimen flows into the city through gate I in the middle, while the water in the picture of Qingming River flows directly in front of the gate. It can be inferred that this gate should be Shangshan gate. Whether this conclusion is reasonable or not is worth pondering. If you are interested, you can also join the discussion team<br>

After passing through the city gate, we can truly enter the city. Those nails on the city gate are also very particular, with 7 horizontal and 9 vertical-a total of 63 nails, indicating that it is not the highest level here. If it's a palace compound, there must be nine-81 in all. Because nine is the maximum value of single digits, ancient people regard 9980-as the first of the positive numbers, so it means "supreme" and symbolizes the supremacy of feudal monarchy. More interestingly, in the original "The Riverside Scene at Qingming Festival", the first two words "Shangshanmen" were hidden by the author, but only two points were clicked. However, according to historical research, The Riverside Map of Qing and Ming Dynasties depicts the southeast of Kaifeng, Tokyo. At that time, there was a water gate in the southeast of Kaifeng]; Also known as Dongshuimen, it has Tongjinmen in the north and Shangshanmen in the south. The water in the East Watergate flows into the city through the I Gate in the middle, while the river in the Qingming Riverside Map flows right in front of the gate. It is inferred that the gate should be a good gate. Whether this judgment is reasonable is worth pondering. If tourists and friends are interested, they can also join the discussion team. After passing through the city gate, we can truly enter the city. Those nails on the city gate are also very particular, with 7 horizontal and 9 vertical-a total of 63 nails, indicating that it is not the highest level here. If it's a palace compound, there must be nine-81 in all. Because nine is the maximum value of single digits, ancient people regard 9980-as the first of the positive numbers, so it means "supreme" and symbolizes the supremacy of feudal monarchy. More interestingly, in the original "The Riverside Scene at Qingming Festival", the first two words "Shangshanmen" were hidden by the author, but only two points were clicked. However, according to historical research, The Riverside Map of Qing and Ming Dynasties depicts the southeast of Kaifeng, Tokyo. At that time, there was a water gate in the southeast of Kaifeng]; Also known as Dongshuimen, it has Tongjinmen in the north and Shangshanmen in the south. The water in the East Watergate flows into the city through the I Gate in the middle, while the river in the Qingming Riverside Map flows right in front of the gate. It is inferred that the gate should be a good gate. Whether this judgment is reasonable is worth pondering. Tourists and friends can also join the discussion team if they are interested.