What did Dutch visitors observe about Tianjin in the 17th century?

During the mid-17th century, members of the first Dutch diplomatic mission to China visited Tianjin and provided favorable observations regarding the city's infrastructure and activity. They specifically noted the following features:

• Defensive Walls: The visitors commented on the well-constructed wall surrounding the city, which stood 25 feet (7.6 meters) high.1
• Cultural and Commercial Sites: They observed the presence of many temples and noted the existence of a large area dedicated to commerce and marketing.1

At that time, Tianjin was emerging as a leading economic center in North China, bolstered by its strategic position at the northern terminus of the Grand Canal.1