Rubuta ci gaba don wannan sakin layi - An haife shi a 1938 a Pakse (to wani ɓangare na kariya ta Faransa na Laos a cikin Indochina na Faransa), Saysangkhi ya sami digiri na ilimi na sakandare a fannin ilmin lissafi a 1960, ya halarci makarantar injiniya na aikin jama'a a Laos, sannan ya yi karatun doka da kimiyyar tattalin arziki a Paris daga 1964 zuwa 1965. Bayan ya dawo, ya zama shugaban Sadarwa da Sufuri na Gwamnatin Masarautar Laos (RLG). A lokaci guda, duk da haka, an ce ya "shiga cikin juyin juya hali" a madadin 'yan adawar Lao People's Revolutionary Party, wanda a lokacin aka kulle shi cikin yakin basasa.
tare da RLG. An yi imanin cewa ya yi aiki a matsayin mai fafutukar "ƙasa", yana adawa da RLG daga cikin sahunta. Kafin LPRP ta hau mulki, ya zama Babban Daraktan RLG na Ayyukan Jama'a. Bayan da LPRP ta karɓi mulki a 1975 kuma ta kafa Jamhuriyar Demokradiyyar Jama'ar Lao (LPDR), ya yi aiki a matsayin Daraktan Kayan aiki da Kayan aiki a Ma'aikatar Ayyukan Jama'a da Sufuri har zuwa 1981, lokacin da aka nada shi Babban Daraktan Wakilin LPDR a tashar jiragen ruwa ta Vietnam ta Da Nang. A cikin 1982, ya koma Laos don zama Ministan Ministan Kayan aiki a cikin majalisar LPDR. Ya kasance a wannan mukamin har zuwa 1985, lokacin da ya zama Mataimakin Ministan Sadarwa, Sufuri da Wasiku. A cikin 1990, 'yan watanni kafin ya yi murabus daga LPRP da kama shi, ya zama Mataimakin Ministan Kimiyya da Fasaha, wani mukami wanda shi ma ya yi murabus tare da membobin jam'iyyarsa.