To add advertising keywords in bulk on Shopee, you can first log in to the Shopee Seller Center, and then find the "Keyword Advertising" option in "Marketing Activities". Next, select the products you want to promote and enter the keyword management interface. In this interface, you can add new keywords in bulk and set the corresponding bids and matching types. In addition, Shopee also provides a recommended keyword function. You can optimize your advertising keywords based on the recommendations to improve advertising results. Remember to monitor and adjust keywords regularly to ensure that the advertisement can accurately reach the target users.