Taobao for better advertising. Collecting big data and marketing it based on individual search preferences is the proper explanation.

There are other explanations:

If you are searching on web Taobao, you need to beware of Trojans, there is a risk of invading your account.

Expanded information:

Taobao.com is the larger online retail, business community in the Asia-Pacific region, founded in May 2003 by Alibaba Group. Taobao ? is China's popular online retail platform, with nearly 500 million registered users and more than 60 million regular visitors per day, while the number of items online has exceeded 800 million per day, with an average of 48,000 items sold per minute.

By the end of 2011, Taobao's single-day transaction volume peaked at 4.38 billion RMB, creating 2.708 million direct and full employment opportunities. With the expansion of Taobao and the increase in the number of users, Taobao has also transformed from a single C2C online bazaar into a comprehensive retail shopping mall including C2C, group-buying, distribution, auctions and other e-commerce models. It has now become one of the world-wide e-commerce trading platforms.

March 15, 2016, the 315 evening party exposure, Taobao merchants have brushing and other deceptive consumer phenomenon.

On March 29, 2016, Zhang Yong, CEO of Alibaba Group, clarified the strategy for the future of Taobao: community, content and local life are the three major directions.

In March 2018, the official website of the Beijing Municipal Consumption Association showed that the Beijing Municipal Consumption Association purchased four kinds of comparative test samples on Taobao in 2017, and one of them did not meet the standard, with a failure rate of 25.0%.

August 8, 2018, Alibaba Taobao revealed that it will enter the MR (mixed reality) shopping field, and will soon launch its product, Taobao Buy Ah, at the 2018 Festival of Creation.