I have been reading this book

This week I have been reading “Unbeaten Tracks in Japan (Japanese translated version)” by Isabella Bird who was an English explorer in the late 19th century. There are many Japan travel diaries written by foreign people in the transition period between feudal era and Meiji era. Most of them are described urban areas such as Tokyo, Yokohama, Kyoto, etc., while she focused on rural areas of Northern Japan.
In this book, Japan and Japanese are depicted from a western viewpoint of that time. She wrote down frankly the Pros and Cons of Japan, and it shows that she was shocked by Japanese lifestyle and behaviors including food, climate, sanitary conditions, people’s appearance, traditional music, and so on. For me as a Japanese, it is surprised by the differences between our lifestyle then and now, at the same time, I realize that our thoughts and attitudes remain essentially the same.

Almost perfect, well done! I must mention one thing, I personally would not use foreign as a way to describe someone from another country, even though it is not directly a bad word; it does have a negative tone to it. Especially in England, where the media use the word, to describe every bad thing a person from another country does. Instead of foreign or foreigner you can use internationals - This is much more friendly. (Just a little advice)

I have been reading this book

This week I have been reading “Unbeaten Tracks in Japan (Japanese translated version)” by Isabella Bird, who was an English explorer in the late 19th century. Many Japan travel diaries were written by foreign visitors in the transition period between feudal era and Meiji era. While most of them describe urban areas such as Tokyo, Yokohama, Kyoto, etc., she (see note) focused on rural areas of Northern Japan.
In this book, Japan and the Japanese people are depicted from a western viewpoint of that time. She frankly described the Pros and Cons of Japan, and it is evident that she was shocked by Japanese lifestyle and behaviors including food, climate, sanitary conditions, people’s appearance, traditional music, and so on. As a Japanese person, I was surprised by the differences between our lifestyle then and now, and at the same time, I realized that our thoughts and attitudes remain essentially the same.

(Note: instead of she, I would recommend you use the Author's last name, Bird.  Saying 'she' is not 100% correct, even though you have established Bird as being the topic.  This is particularly important in academic writing)

Your English is really good!  Be careful of tense...

In response to previous comment...  Use of the word foreign can indeed be problematic, but only in certain contexts.  The phrase "foreign visitors" "foreign guests" "people from foreign cultures" don't have the menacing feeling that "he/she is foreign" has.