Very-high-energy gamma-ray emission from high-redshift blazars with Fermi-LAT data in the southern hemisphere

We searched the high-redshift blazars in the southern hemisphere which seem to be detectable by the ground-based cherenkov telescopes, the H.E.S.S.- I and the Cherenkov Telescope Array (CTA). We found that PKS 0118-272 could be detected constantly by the CTA, and PKS 0454-234 could be detected by the CTA when the target object in the bright period. Unfortunately, PKS 1244-255 is difficult to be detected by the CTA.