Wu Chengxiao is a writer, a suspense writer. Although he is not famous, his writing is undoubtedly thought-provoking. On Valentine's Day, his best friend died at home, which surprised him. My friend was a nice guy, but he didn't understand why he died. Everything present proved that his friend committed suicide. However, he didn't know if it was because of his career. Looking at the diary left by his friend, he felt that it was definitely not that simple.