Three Kingdoms: Strategist with the Three Kingdoms Card Game

Lu Ren, a modern young man and top-tier Three Kingdoms Kill player of professional caliber, prides himself on ranking in the top ten on the national server. One night, he is defeated three times in a row by the mysterious player 'Ghost Talent Guo Fengxiao.' Frustrated and furious, he reviews the matches until dawn and dies of a heart attack. When he opens his eyes, he finds himself in the late Han Dynasty, around 189 AD, just before the death of Emperor Ling of Han, when the world is on the brink of chaos. Armed with a rough understanding of Three Kingdoms history, a deep grasp of the card game's general skills, and a thorough knowledge of the Thirty-Six Stratagems and ancient military anecdotes, Lu Ren struggles to survive in this turbulent era. He first serves Yuan Shao but leaves due to ideological differences; later, he meets Liu Bei and, impressed by his benevolent character, devotes himself to assisting him. — Description from novelcodex.org