His character is a member of the Police Intelligence Division and she plays the head of the Investigation and Reports Branch in the Traffic Police.
It is the first time the couple will be working together since they hooked up in March.
Speaking to The New Paper from the Home Team Academy, where he and co-star Li Nanxing were undergoing training to handle live firing for the drama's new season, Qi said that he does not know how things will pan out.
Said Qi: "I cherish all the time I get to spend with her because, due to work commitments in different countries, we are often apart.
"So I'm definitely looking forward to the scenes that we're both acting in. That's really the best thing about the upcoming season."
But when asked how their real-life relationship will affect their reel-life relationship, he conceded that he wasn't sure how it would pan out.
He said: "I have mixed feelings about this. Working together is very new to us, but I want to remain open-minded and I don't want to think too much about it.
"We will know how it is when we get there. It won't be a bad thing, but I'm sure there will be difficulties.
"Just like how it is when you work with your mother or friend, it's the same with us. You need time to adjust to it."