All England Championships was held in 1899, but regarded as an OPEN championships about in 1939 and before that year it was only a "national" championships for England/GB and its colonials. The IBF was founded in about July 1934, and then it had supported All England championships to become an Open tournament as an unofficial world championships till 1977 when an official world championships was held in sweden. China- the power, can not become a member association of the IBF becouse of politics and can not entered All England Championships either until 1982.