Context: Established in 1988, Chengdu Hi-tech Industrial Development Zone (Chinese: 成都高新技术产业开发区; pinyin: Chéngdū Gāoxīn Jìshù Chǎnyè Kāifā Qū) was approved as one of the first national hi-tech development zones in 1991. In 2000, it was open to APEC and has been recognized as a national advanced hi-tech development zone in successive assessment activities held by China's Ministry of Science and Technology. It ranks 5th among the 53 national hi-tech development zones in China in terms of comprehensive strength.

Question: When was the Chengdu Hi-tech Industrial Development Zone established?
Answer: 1988

Question: When was the Chengdu Hi-tech Industrial Development Zone approved?
Answer: 1991

Question: The Chengdu Hi-tech Industrial Development Zone is what rank of 53 in China terms of comprehensive strength?
Answer: 5th

Question: what was approved as a hi-tech development zone in 1988?
Answer: Unanswerable

Question: Wat development zone was established in 1991?
Answer: Unanswerable

Question: What ranks number 5 in world development zones?
Answer: Unanswerable

Question: When was the APEC Hi-tech Industrial Development Zone established?
Answer: Unanswerable

Question: When was the APEC Hi-tech Industrial Development Zone approved?
Answer: Unanswerable

Question: The Chengdu APEC is what rank of 53 in China terms of comprehensive strength?
Answer: Unanswerable

Question: What has been recognized as a pinyin?
Answer: Unanswerable

Question: How many national APEC zones are in China?
Answer: Unanswerable