有理有據

有理有据
yǒulǐyǒujù

to have solid grounds; well-grounded; well-founded

Wiktionary

Entry Composition

1 有理 yǒulǐ
  1. reasonable
  2. justified
  3. right
  4. (math.) rational
=2 有 yǒu
  1. to have; there is
  2. (bound form) having; with; -ful; -ed; -al (as in 有意 yǒuyì intentional)
=2 有 yòu
  1. (obsolete on its own in Standard Chinese) alternative form of 又 (yòu, “again”)
  2. (obsolete on its own in Standard Chinese) alternative form of 又 (yòu, “and; with a remainder of (when dividing an integer by ten)”)
  3. alternative form of 又 (yòu, “again”)
  4. alternative form of 又 (yòu, “and; with a remainder of (when dividing an integer by ten)”)
=3 據 jù
  1. according to
  2. to act in accordance with
  3. to depend on
  4. to seize
  5. to occupy
=3 據 jǐ
  1. (obsolete on its own in Standard Chinese) to catch; to seize
  2. to catch; to seize