宋太宗赵光义非常喜欢读书。
他觉得，书里的知识就像宝藏一样，能帮助他更好地治理国家。
但是，历代的典籍文史资料实在太多，怎么才能把它们都读完呢？
于是，他命令当时的大文学家李昉主持编辑一套集历代图书资料精华的百科全书。
李昉等学者非常努力，他们花了七年的时间，终于编成了一套大书。
宋太宗对这部书非常重视，他给它取名为《太平御览》，又简称《御览》。
宋太宗每天都会亲自阅读三卷《太平御览》。
他还给自己定下了一个目标：要在一年内看完整部书。
有时候，因为国事繁忙，他来不及阅读，但他一定会在改日补上。
大臣们看到宋太宗每天都这么辛苦地读书，都很担心他会太劳累。
他们常劝他多休息，但宋太宗却说：“‘开卷有益’，经常看书，总是有好处的，我一点也不觉得累。”
正是因为每天阅读三卷《太平御览》，宋太宗学识渊博，处理国事得心应手。
他的大臣们也纷纷仿效他，勤奋读书。
后来，“开卷有益”这个成语就流传了下来，用来指打开书本阅读，即能得到好处。
Emperor Taizong of Song, Zhao Guangyi, loved reading very much.
He thought that the knowledge in books was like treasure, which could help him govern the country better.
However, there were too many historical classics and literature. How could he finish reading them all?
So, he ordered the great literary figure at that time, Li Fan, to compile an encyclopedia of the essence of books from previous dynasties.
Li Fan and other scholars worked hard for seven years and finally compiled a large book.
Emperor Taizong attached great importance to this book. He named it 'Tai Ping Yu Lan' or simply 'Yu Lan'.
Emperor Taizong read three volumes of 'Tai Ping Yu Lan' every day.
He also set himself a goal: to finish reading the whole book within a year.
Sometimes, due to busy state affairs, he didn't have time to read. But he would definitely make up for it on another day.
The ministers saw how hard Emperor Taizong worked every day, and they were worried that he might be too tired.
They often advised him to rest more, but Emperor Taizong said, 'Reading is beneficial. Reading often always brings benefits. I don't feel tired at all.'
It was because of reading three volumes of 'Tai Ping Yu Lan' every day that Emperor Taizong became knowledgeable and handled state affairs skillfully.
His ministers also followed his example and studied diligently.
Later, the idiom 'Reading is beneficial' spread, referring to the benefit of opening a book and reading.
