李牧對秦軍的戰績，是大家有目共睹的：
https://en.wikipedia.org/wiki/Qin%27s_wars_of_unification
In 233 BC, Huan Yi's army crossed Mount Taihang and conquered the Zhao
territories of Chili (赤麗) and Yi'an (宜安), both located southeast of
present-day Shijiazhuang, Hebei.
the Qin army under Huan Yi engaged the Zhao army commanded by General Li Mu
at the Battle of Fei in which the Qin sustained a massive defeat and nearly
lost all their forces.
In 232 BC, the Qin forces split into two groups to attack Fanwu (番吾;
present-day Lingshou County, Hebei) and Langmeng (狼孟; present-day Yangqu
County, Shanxi), but were defeated again by the Zhao army led by Li Mu.
李牧對秦軍二戰二勝，而肥之戰的經過如下：
https://en.wikipedia.org/wiki/Battle_of_Fei_(233_BCE)
Li Mu felt that the Qin army's morale was high after its earlier victories,
so it would be unwise for Zhao to attack Qin then. He ordered his troops to
strengthen their fortifications and defences while waiting for an opportunity
to launch an counteroffensive.
As the bulk of the Qin army had left to attack Fei, the Qin camp was poorly
defended so Li Mu seized the opportunity to order his troops to launch an
offensive on the Qin camp. The Zhao forces scored a major victory in the
ensuing battle and captured several prisoners-of-war and supplies.
As Li Mu predicted that Huan Yi would retreat from Fei to save the camp,
he ordered his men to lay an ambush on Huan Yi's retreat route. Huan Yi's
retreating troops fell into the ambush.
Qin sustained over 100,000 casualties in the battle
到了秦滅趙之戰，李牧一樣打得有聲有色：
In 229 BC, Qin took advantage of the situation to launch a pincer attack
from the north and south on Handan, the Zhao capital.
On the Zhao side,
Li Mu and Sima Shang (司馬尚) were put in command of the Zhao army.
Li Mu ordered his troops to build defensive structures and avoid direct
confrontation with the enemy. The Qin forces were unable to advance further
and both sides reached a stalemate.

因為那時韓國已經滅亡，魏國只剩下一個縣大小，齊國自保楚國好像也是宮廷政爭，實力也大不如前，所以多國聯軍是組不起來。何況當年也是因為有信陵君才組起來，當時如果沒有信陵一樣組不起來。

楚國一直都內鬥內行，夾擊就別想了

是可以再多撐幾年，但是經濟體量和人力以及將領充沛庫就擺在那邊，終究還是被優秀的秦軍將領海淹過去

從李牧被殺前趙國力的記載 很明顯李牧就是皮洛士式勝利逃去代地資源更少 最終也是撐不住的

國土面積差太多+黃土高原資源已經耗竭注定秦國會勝利秦國邯鄲之戰到滅六國短短30年就舉國大軍就補回來了秦國征戰也是幾十萬又幾十萬兵在燒，問題是秦國兵燒不完趙國一個長平就去掉了半條命，幾十年都沒補回來趙國除非找到新大陸，然後全力種田龜兵才能和秦國一戰

沒救了 國家制度 整體國力的差距就在那裡

樂毅那時齊國主力被五國聯軍幹翻 首都和國王都沒了