Lan Yan Tu Ji (2022)

Both include firefighting as a central theme. BLue Flame Assault focuses only on firefighting but the first responders focuses on a range of different first responders.

My Fireworks on Earth is also a firefighter drama with a firefighter male lead.
There's romance in both shows

Both dramas are about fire fighters
but I hope Blue flame is better than flaming heart
because the romance destroyed that other one

The main plot in both dramas is that the ML's are firefighters. There's a comrade around the firefighters (much like in a date with the future) and there's romance in both.

I recommend this both drama because , Male lead and Female lead
try to solve problem
In one drama explosion and another student murder/suicide