Extension: Tmall Elf supports voice shopping and voiceprint payment. Tmall Elf supports charging phone bills and purchasing goods in Tmall Supermarket, and completes shopping through voiceprint recognition technology. The use method is to wake up the Tmall Elf by voice, and then say what products you want to buy or charge the phone bill, which is very convenient and proper black technology. Tmall Elf supports getting information and answering questions. Tmall Elves can ask all kinds of interactive questions about constellations, listen to radio news, tell stories and tell jokes. Tmall Elf is very interactive. When Bian Xiao is bored, he can chat with the Tmall Elf all afternoon. Tmall Elf supports voice-on-demand music. As a smart speaker, Tmall Elf can use voice control to order the music and audio books you want to listen to. It feels cool. Tmall Elf supports the control of thousands of smart devices in Ali's smart ecosystem. For example, the Tmall Box can use the voice of the Tmall Elf to control channel change, switch on and off, and so on.