"Where the nightingales are singing..." (33k) by moominmammashandbag is a non-magical history AU #fanfic where #WangXian were in an early arranged marriage before wwx reportedly died in battle. Years later lwj oversees an exchange of prisoners of war. Not angsty!
Written in a wonderful dry humor voice, with (pseudonymous) famous romantic poet and hilariously petty lwj who doesn't let anyone forget their crimes against wwx.