Microsoft’s Bing is the second most popular search engine in China, a market that Google exited years ago. Today, Bing remains as the only Western search engine accessible there. But success has meant having to make significant compromises on issues such as censorship.

On today’s Big Take podcast, Bloomberg’s Ryan Gallagher gives us one of the first comprehensive, inside accounts of Bing’s sophisticated censorship system in China, and how it’s centered on an expanding blacklist of websites, words and phrases.