嚆矢

hāoshǐ
  1. (figuratively) beginning; start;
  2. (figuratively) harbinger; herald
  3. beginning; start;
  4. harbinger; herald
  5. whistling arrow

Wiktionary

Entry Composition

1 嚆 hāo
  1. sound
  2. noise
2 矢 shǐ
  1. arrow
  2. dart
  3. straight
  4. to vow
  5. to swear
  6. old variant of 屎 shǐ