Black Valley Technology is a technology company with data mining and artificial intelligence as its core. They use advanced algorithms and technologies to capture Tik Tok's information and fan data. Specifically, they can use the following technologies to achieve the grabbing function:

1. Crawler technology: By writing a web crawler program, Black Valley Technology can simulate the user's behavior and automatically visit Tik Tok's webpage, thus obtaining news and fan data.

2. Data capture framework: Black Valley Technology may use some open source data capture frameworks, such as Scrapy and Beautiful Soup, to assist data capture.

3. Data storage and processing: Black Valley Technology may use some database technologies, such as MySQL and MongoDB, to store and process the captured data.

It should be noted that obtaining Tik Tok's message fan data may involve privacy and legal issues, and it is usually necessary to follow relevant compliance requirements and agreements. These technologies are only a possibility, and the specific situation may need to refer to the technology and business direction disclosed by Black Valley Technology.