What are the three functions of quotation marks

1 means direct reference; Quoting refers to quoting other people's words or idioms, aphorisms, poems, etc. In terms of words, including onomatopoeia and transliteration)?

2, indicate the specific title; (Specific titles refer to names, abbreviations, special terms, anniversaries, etc. Have certain characteristics)?

3. Expressing irony and negation; (also known as "irony")?

4. Express special meanings; Words in special meaning deixis have new meanings in their specific language environment?

5. Emphasize and attract attention.

Examples are as follows:

1, evil bullets also threaten the delicate "flower of peace". (specify the specific title)?

Call him "special" because he loves fish so much that he forgets me. ? (expressing emphasis, special meaning)?

When he was studying at school, his classmates called him a debater. (indicate reference)?

How can such a troubled river become the cradle of the Chinese nation? (Special meaning, figuratively)?

People say, "Guilin's landscape is the best in the world." (indicate the reference? )?