# Bond Module
The `bond` module provides bond market data from multiple sources.
## Functions (51 total)
### Government Bonds
- **bond_zh_us_rate** — China/US government bond yields
- **bond_china_close_return** — ChinaMoney yield curves
- **bond_china_close_return_map** — Current yield curve snapshot
### Convertible Bonds
- **bond_zh_cov** — Convertible bond list
- **bond_zh_cov_info** — Convertible bond info
- **bond_zh_cov_info_ths** — Convertible bond info from THS
- **bond_zh_cov_value_analysis** — Convertible bond valuation
### Corporate Bonds
- **bond_corporate_issue_cninfo** — Corporate bond issuance
- **bond_info_cm** — ChinaMoney bond info query
- **bond_info_cm_query** — ChinaMoney query parameters
- **bond_info_detail_cm** — ChinaMoney bond details
### Bond Spot
- **bond_spot_quote** — Bond spot quotes
- **bond_spot_deal** — Bond spot deals
### Bond Indices
- **bond_cb_index_jsl** — Convertible bond index
- **bond_cb_jsl** — Convertible bond data from JSL
### Bond Buyback
- **bond_sh_buy_back_em** — Shanghai bond buyback
- **bond_sz_buy_back_em** — Shenzhen bond buyback
- **bond_buy_back_hist_em** — Buyback history
### Bond Summary
- **bond_cash_summary_sse** — SSE cash bond summary
- **bond_deal_summary_sse** — SSE bond deal summary
### Bond Issuance
- **bond_treasury_index_cbond** — Treasury index from CBond
- **bond_local_government_issue_cninfo** — Local government bonds
### Other Bond Data
- **bond_zh_sina** — Sina bond data
- **bond_gb_sina** — Sina government bond data
- **bond_cb_sina** — Sina convertible bond data
- **bond_cb_ths** — THS convertible bond data
- **bond_nafmii** — NAFMII data
- **bond_em_rate** — Eastmoney rate data
## Usage Examples
```rust
use akshare::AkShareClient;
let client = AkShareClient::new();
// China/US government bond yields
let rates = client.bond_zh_us_rate("中国国债").await?;
// Convertible bond list
let cov = client.bond_zh_cov().await?;
// ChinaMoney yield curves
let yields = client.bond_china_close_return("国债", "1", "20240101", "20240201").await?;
```