"July Seven Letters of Fallen Notification" executive producer Tang Hongjing introduced that Wang Xueqi, who starred in "Mulan", "Bodyguards and Assassins" and "Heaven", plays as Cao Liyou, a surviving veteran of the Liberation War. By chance, he discovers 76 letters of fallen notification addressed to his comrades which have been sleeping for 50 years. One of them washes away the injustice on him for 50 years. When Cao Liyou sticks and restores each letter, he sees fresh faces one by one before his eyes. They are his regiment instructor, battalion commander, company commander, comrades... At that moment, he realizes that these most beloved comrades who sacrificed at the last moment before the founding of the People's Republic of China, the cornerstone of the republic, their families have received no news from them for a whole 50 years...