Use i2c to run 7 segment LED did not work

Hi, I am using Xavier i2c to drive this 7 segment LED, https://www.amazon.com/gp/product/B07MCGDST2/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1. I followed the instructions from JetsonHacks: https://www.youtube.com/watch?v=7_H7tzcdBMU

However, it did not work. When I run

sudo i2cdetect -y -r 1

It could not see anything on address 0x70.

Why?

Please have a confirm which bus you was connected.
The youtube video was connect to bus 8