Favier estimated that during the Boxer Uprising that between 15,000 and 20,000 members of his flock were killed and that three-quarters of the chapels were destroyed.
Favier memperkirakan bahwa selama Pemberontakan Boxer yang antara 15.000 dan 20.000 anggota dari kelompoknyanya tewas dan tiga-perempat kapel-kapelnya hancur.