You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Zhejiang

Context:
 Zhejiang (help·info), formerly romanized as Chekiang, is an eastern coastal province of China. Zhejiang is bordered by Jiangsu province and Shanghai municipality to the north, Anhui province to the northwest, Jiangxi province to the west, and Fujian province to the south; to the east is the East China Sea, beyond which lie the Ryukyu Islands of Japan.

Question:
Which province is Zhejiang bordered by to the northwest?

Anhui