This book is a mark left in the woods. It is a sign left by two travelers who have chosen every day to share a portion of their fun trip. The woods are the tall trees of the concepts, the methods, and not least, the practice of financial markets. Their journey has been long but fast-paced. At one point, they felt a need to share and leave a mark, to tell others that they had been in these woods and they have tried to find their way through in a manner that they have enjoyed so much, they wanted to invite others along the same path. Of course, the two travelers are us, the Authors, and this corner of the woods is about portfolio management. We hope that the sense of speed through a journey and the fun we had while writing together, continuously swapping ideas and encouraging each other, will spring to life from the pages of our book.

这本书是树林里留下的痕迹。这是两个旅客留下的标志，他们每天都选择分享他们的一部分乐趣旅行。森林是概念、方法的大树，尤其是金融市场的实践。他们的旅程虽然漫长，但节奏很快。有一次，他们觉得有必要分享并留下一个印记，告诉别人，他们曾在这些树林里，他们试图以一种他们非常享受的方式找到出路，他们想邀请其他人沿着同样的道路前行。当然，这两位旅行者是我们，作者，而这片森林的一角是关于投资组合管理的。我们希望旅途中的速度感和我们一起写作、不断交换想法、互相鼓励的乐趣，将从我们的书页中迸发出来。