Nine people were still missing as of Sunday.
The mudslide hit part of a village in Suichuan County in Jiangxi province early on Saturday, damaging a dozen houses.
Rescuers found two people dead on Sunday, state broadcaster CCTV reported.
More than 5300 people in the country were relocated to safer places.
Rescuers on Sunday morning found one of the missing people dead among collapsed houses, state broadcaster CCTV reported.
CCTV separately reported two people were killed in Hunan province in south-central China following downpours brought by the typhoon.
The report did not specify their cause of death but said the rain triggered landslides and other disasters.
Saudel made two landfalls in Zhejiang Province on August 28 and a third as a tropical storm in Fujian Province on Thursday, Chinese official news agency Xinhua reported.
In Fujian, local authorities said on Friday multiple residents were missing after days of heavy rain, Xinhua reported.
Both provinces neighbour Jiangxi.
The exact number was unclear, but more than 100 houses collapsed in Huating Town in Putian city, authorities said.
A dike was breached on Thursday afternoon, flooding villages and trapping residents, Xinhua reported.
About 600,000 residents had been evacuated from risky offshore and onshore areas in Fujian as of Friday night, Xinhua said.
Images from state broadcaster CCTV showed streets turned into rivers, while rescuers deployed inflatable boats in their efforts.
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