The Jesuits, as astronomers or interpreters, were in high favor at court and the question of rites which was disadvantageous to other missionaries, did not impair their credit during the reign of K'ang-hi. Matters were different under Yung Cheng, son and successor of K'ang-hi, who in 1724 issued an edict exiling to Canton all missionaries except those occupying various offices at Court; in 1736, an edict of K'ien Lung, son and successor of Yung Cheng, prohibited the teaching of Christian doctrine under penalty of death. On 25 June, 1746, a cruel persecution broke out in Fu-kien, during which the vicar Apostolic, Bishop Sanz, and four other Spanish Dominicans, Serrano, Alcobar, Royo, and Diaz were martyred. The Jesuits Attimis and Henriquez were put to death at Su-chou on 12 Sept., 1748. A great change was made in the Christian Church at Peking, the Jesuits being replaced by the Lazarists