In fact, this contrast is difficult to interpret in a few words, because the conditions are too few, and the real war is more changeable.
For example, in the war between the Spaniards and the Inca Empire, more than 100 Spaniards did not even use their guns, and won the battle against 80,000 troops.

Pizarro in Spain at that time had only 168 scattered rabble-rousers, their main weapons were some early gunpowder guns, as well as ordinary armor swords and horses, Pizarro even deceived and coerced these men to accompany him on the adventure, many people did not think that they could win, and they were prepared to escape early.
The Inca Empire, on the other hand, was a real power with a population of 20 million, with a very large army. At that time, the Inca Emperor Atahualpa was patrolling the world with a large group of men and horses, and the Spaniards were scared to death when they saw their continuous tents, but Pizarro insisted on a large ticket, and he deceived the Inca emissaries, saying that he hoped to meet the emperor in a friendly way, and then ambushed the people and horses at the agreed place.
In fact, the Inca emperor was not a fool, although he did enough of the formalism of the heavenly kingdom, but he brought an army of 80,000 people to the meeting, obviously not completely assured of the Spaniards. But the result was astounding, Pizarro's ragtag crowd collapsed the Inca army in one ambush, and in just a few minutes the 80,000-strong army was defeated, and they left the trembling emperor and fled into the mountains, trampling on thousands of people.
After counting, the Incas were killed 7,000 people, trampled on each other in the ravine and trampled to death 40,000, and the 80,000 troops went to more than half.
What do Spaniards do in a few minutes? These 168 people were enough to kill 40,000 pigs and exhaust people, and at that time they fired a few random shots, most of the results of the battle were slashing and stabbing and riding horses, the Incas had never seen horses, let alone "guns" that spewed smoke and fire, Pizarro only brought seven or eight riders, and he crashed into the crowd and caught Atahualpa.
A huge Inca Empire, which was destroyed by the Spaniards in a few clicks, was not necessarily useful all the time in the face of unknown fear. If Pizarro's 168 men had played against not living Inca warriors, but pure data games like War Simulator, I'm afraid they would have been reduced to minced meat for a minute.
Therefore, we have every reason to believe that under sufficient conditions, a team equipped with 20 single-shot rifles has a chance to achieve a record of 10,000, as long as the other party is not a robot, not an unreliable pure data army in the simulator, then everything is possible.
In fact, our army has many examples of single-digit personnel resisting the other side's large army, the level of light weapons on both sides is at the same level, and the heavy weapons are completely suppressed.
The most famous and well-known is the "Five Heroes of Wolf's Tooth Mountain", the 5 soldiers of the Eighth Route Army accepted the order "before noon the next day, do not allow the enemy to cross the chessboard before noon the next day", they marched and fought all the way, engaged the Japanese army with artillery step by step, retreated from the East Mountain Pass to the chessboard, and also took the initiative to attract the Japanese attack, in the case of having already completed the task (until the afternoon), sacrificed themselves, and led the Japanese army into the wrong way of the chessboard.
The Japanese army of more than 3,000 troops could not do anything about these 5 fighters, so the peak of Wolf's Tooth Mountain launched a fierce offensive and defensive battle, and the 5 soldiers of the Eighth Route Army ran out of ammunition, used up all the bullets and grenades, and finally even the bayonets were broken in the fight, and there were no stones that could smash people on the top of the mountain...
The quality of the Japanese army in World War II is obvious to all, what if they are replaced by more garbage troops? Or the five brave men were replaced by 20 strong men, and then enough bullets were given to let the Japanese army attack with the Oriental knife, and could they still fight? It can be seen that the will of steel plus sufficient geographical and material conditions, coupled with an unqualified enemy, how many people are not rudderless.
This will was brought to the extreme in Shangganling, when a 19-year-old new soldier named Hu Xiudao, in a position where people were basically lightened, against the "VanVleet firepower" of the Us army and the attack with the participation of tanks, one person switched back and forth in positions 3 and 10 on Hill 597.9, and defended 41 attacks of the United Nations army with the squad leader and another soldier, carried a full day under the attack of two battalions, and killed and wounded 280 enemy troops.
There is also another "lone hero" Yang Guoliang in position 11, this Chongqing soldier's position slope is only 20 degrees, and it is very difficult to defend by the enemy's artillery fire, Yang Guoliang and two fighters repelled the enemy's attack several times, and finally held 10 offensives in the case of only himself, and then rolled into the enemy group with the explosive canister. Later, the "Wang Cheng" in the movie is said to refer to yang Guoliang's deeds.
It can be said that the actions of these Chinese soldiers are far more powerful than what "20 rifles block 10,000 people", they are facing 300 cannons, 170 tanks, 3,000 aircraft, 60,000 soldiers, 3.7 square kilometers of positions alone shells hit 1.9 million rounds, if converted into the logic of the title fortifications, they are more than 200 people with bamboo poles to win 60,000 enemies with machine guns.
Looking back at the broken things of the Qing Dynasty, what "attacked Dongjiaomin Lane", the Qing soldiers and the Boxers could not attack the courtyard of the foreigners for a long time, and they could not succeed for 56 days, and when the guns of the people rang out, the Chinese was like a monkey frightened by firecrackers holding his head and scurrying around, and the officials actually engaged in the ghost trick of "attacking and secretly protecting the foreigners", playing a truce to give the foreigners a rest, and went straight inside to replenish their drinking water... You see, all of them are Chinese, but the gap is higher than the sky, if you change to Li Yunlong with 10,000 people, the "20 guns" inside are afraid that the time to cry is not enough.