Depending on your team comp, you can use Shenhe as a main DPS, granted you have another hydro and a cryo character on the sidelines. The best weapon for Shenhe is her signature polearm, the Calamity ...
The best build for Emilie includes the Lumidouce Elegy polearm and a full set of Unfinished Reverie artifacts ... The Struggle effect can trigger once every 15 seconds, and Emilie can gain Symbols ...