| 钉是钉,铆是铆 | 
dīng shì dīng , mǎo shì mǎo | 
lit. a nail is a nail and a rivet is a rivet (idiom) / fig. meticulous / conscientious / unambiguous | 
| 钉 | 
dīng | 
nail / to follow closely / to keep at sb (to do sth) / variant of 盯 | 
| 钉 | 
dìng | 
to join things together by fixing them in place at one or more points / to nail / to pin / to staple / to sew on | 
|  是 | 
shì | 
to be (followed by substantives only) / correct; right; true / (respectful acknowledgement of a command) very well / (adverb for emphatic assertion) | 
|  是 | 
shì | 
variant of 是 | 
|   钉 | 
dīng | 
nail / to follow closely / to keep at sb (to do sth) / variant of 盯 | 
|   钉 | 
dìng | 
to join things together by fixing them in place at one or more points / to nail / to pin / to staple / to sew on | 
|     铆 | 
mǎo | 
to fasten with a rivet; to rivet / to hammer in a rivet / (coll.) to concentrate one's strength | 
|      是 | 
shì | 
to be (followed by substantives only) / correct; right; true / (respectful acknowledgement of a command) very well / (adverb for emphatic assertion) | 
|      是 | 
shì | 
variant of 是 | 
|       铆 | 
mǎo | 
to fasten with a rivet; to rivet / to hammer in a rivet / (coll.) to concentrate one's strength |