CLEAN : Hole is where the heart is for Chinese cave dwellers

The video tutorial begins with an introduction and addresses initial questions from Smith. It then moves into a discussion on rheumatology, mentioning Sushen and Tanima. The speaker addresses challenges faced over the years and suggests solutions, including a reference to China. The video concludes with a discussion on security and final thoughts, mentioning Heidi.

How does the speaker respond to the question about security?

What does the speaker mean by 'you didn't pull Heidi'?