Gu Xijiu followed Di Fuyi out of the mansion.
To fool their enemies, Di Fuyi and Gu Xijiu treated each other rather intimately the past few days. They either held each other's hand, or Gu Xijiu would place her hand on his waist when they walked together. Since they had swapped bodies, it looked as though Di Fuyi was holding Gu Xijiu's waist.
Perhaps, it was because they had done it so often in the past few days, Gu Xijiu subconsciously wanted to place her hand on his waist again when they walked out the mansion. However, she quickly withdrew her hand when she almost touched him as she suddenly realized something was wrong.
Di Fuyi probably did not notice as he continued walking as though nothing happened.
...