The rapid development and frequently-occurring X class x-ray flares in AR5047

The photospheric morphology drawings of the active region AR5047(Yunnan Observatory No.YAR88147) are shown in Fig.1-12 and plates 1-5. The sunspot group was type DSI as the first seen on 15th June 1988, and keep a less change before pass the central meridian(20th June).