Ou Yan looked at him with a hint of admiration in her eyes.Not long after, Si Yechen let her take a look at the screen. Ou Yan saw the last formula and suddenly realized a new way..."I understand," sh...'t believe me if I told you, for the past twenty years, I've been outwardly successful while being constantly criticized and belittled by my in-laws and husband behind closed doors. These are the scar...