The Queen of Hearts (qi) is quite timid (怯) and does not dare to use the Erechtheion's bathroom (e4) with her personal protection: a flail (忄) and a concrete barrel (去) which she uses as body armor.
to cut / to carve / to engrave / to chisel / fig. to chisel away at
The Queen of Hearts (qi) is about to finish building her golden harpoon (钅) in the Erechtheion's bathroom (e4). The last step is to engrave her name with an engraver (契). Unfortunately her engraver breaks as she is halfway through; she'll have to use her old chisel (锲) instead.