Is “He intercepted the river to seize Adou and used the empty camp stratagem at the Han River.” true?
attested in history
The Biography of Yun (Yun Biezhuan) records that Zhao Yun and Zhang Fei intercepted the river to recover Adou; at the Battle of Han River, he set an ambush and repelled Cao Cao's forces, earning Liu Bei's praise: 'Zilong is full of courage.'
Zhao Yun
In official history, he was a Shu Han general known for his weighty responsibility, gentleness, and benevolence; in the novel, he is portrayed as an invincible warrior and the foremost spear master.