diff --git a/README.md b/README.md
index 78e1577..8e4019e 100644
--- a/README.md
+++ b/README.md
@@ -218,8 +218,8 @@ c' = K-PKE.Encrypt(ek_pke, m', r')   ←── 复用整条 Encaps 流水
 ./run_tb.sh dec      # Decaps（含拒绝路径）
 ./run_tb.sh dec 2 0  # 仅 K=2 用例 0
 
-./run_hello.sh       # hello_world 端到端（单实例）
-./run_hello.sh two   # hello_world 端到端（双实例：genenc + dec）
+./run_tb.sh hello      # hello_world 端到端（单实例）
+./run_tb.sh hello two  # hello_world 端到端（双实例：genenc + dec）
 ```
 
 `hello_world` 硬件输出与 Rust 参考逐字节一致：`shared_key=ced0c031a4bee34a...`、`encrypted=a6b5ac5dcb9e9425b9e3b8`、`decrypted="hello world"`。
diff --git a/run_hello.sh b/run_hello.sh
deleted file mode 100755
index 2c33899..0000000
--- a/run_hello.sh
+++ /dev/null
@@ -1,25 +0,0 @@
-#!/usr/bin/env bash
-# run_hello.sh - compile + run an ML-KEM hello_world hardware testbench.
-#   ./run_hello.sh          single-instance protocol (default)
-#   ./run_hello.sh two      two-instance (genenc + dec) protocol
-set -e
-cd "$(dirname "$0")"
-source /opt/Xilinx/Vivado/2019.2/settings64.sh >/dev/null 2>&1
-export LD_PRELOAD="/usr/lib64/libtinfo.so.5"
-rm -rf xsim.dir .Xil
-
-if [ "$1" = "two" ]; then
-    TB=tb_mlkem_two_inst_xsim; SNAP=mlkem_two
-else
-    TB=tb_mlkem_hello_world_xsim; SNAP=mlkem_hello
-fi
-
-# compile the RTL (every non-TB xvlog line from the shared tcl)
-grep -E '^xvlog ' sync_rtl/top/TB/xsim_run.tcl | grep -v 'TB/tb_' | while read -r cmd; do
-    eval "$cmd" >/dev/null
-done
-
-xvlog -sv --relax sync_rtl/top/TB/$TB.v >/dev/null
-xelab $TB -s $SNAP --timescale 1ns/1ps >/dev/null 2>&1
-xsim $SNAP -R 2>/dev/null | grep -vE '^(#|INFO|Time resolution|run -all|exit|xsim|Vivado|====.*Simulator|SW Build|IP Build|Copyright|Tool Version|Start of|source |## )' | sed '/^$/N;/^\n$/D'
-
diff --git a/run_tb.sh b/run_tb.sh
index b482da8..381791e 100755
--- a/run_tb.sh
+++ b/run_tb.sh
@@ -12,6 +12,8 @@
 #        ./run_tb.sh enc 4 1              # Encaps K=4, only CASE=1
 #        ./run_tb.sh dec                  # ML-KEM Decaps: all K, all cases (0..2)
 #        ./run_tb.sh dec 2 0              # Decaps K=2, only CASE=0
+#        ./run_tb.sh hello                # hello_world end-to-end (single instance)
+#        ./run_tb.sh hello two            # hello_world end-to-end (two instances)
 #        ./run_tb.sh --list
 #
 # 'top' (KeyGen), 'enc' (Encaps) and 'dec' (Decaps) share the same RTL datapath;
@@ -39,6 +41,7 @@ if [ "$1" = "--list" ]; then
     done
     echo "  enc   (ML-KEM Encaps; shares the 'top' RTL/tcl, enc testbench)"
     echo "  dec   (ML-KEM Decaps; shares the 'top' RTL/tcl, dec testbench)"
+    echo "  hello (ML-KEM hello_world end-to-end; 'hello two' for two instances)"
     exit 0
 fi
 
@@ -53,7 +56,7 @@ SEL_K="$2"          # optional: 2/3/4 (top/enc modules only)
 SEL_CASE="$3"       # optional: KAT case index (top/enc modules only)
 # 'enc' is not its own RTL dir; it reuses the 'top' KeyGen tcl compile list
 # (same datapath) and swaps in the encaps testbench. 'dec' likewise (Decaps).
-if [ "$MODULE" = "enc" ] || [ "$MODULE" = "dec" ]; then
+if [ "$MODULE" = "enc" ] || [ "$MODULE" = "dec" ] || [ "$MODULE" = "hello" ]; then
     TB_DIR="$SCRIPT_DIR/sync_rtl/top/TB"
 else
     TB_DIR="$SCRIPT_DIR/sync_rtl/$MODULE/TB"
@@ -281,4 +284,39 @@ if [ "$MODULE" = "top" ]; then
     exit $?
 fi
 
+# ML-KEM hello_world end-to-end. Reuses the 'top' RTL compile list, then runs a
+# self-checking protocol TB (no KAT vectors): single instance by default, or two
+# instances (genenc + dec) with 'hello two'. Prints each step's inputs/outputs.
+run_hello_selected() {
+    local tcl_file="$1" variant="$2"
+    set +e
+    rm -rf xsim.dir .Xil
+
+    local tb snap
+    if [ "$variant" = "two" ]; then
+        tb=tb_mlkem_two_inst_xsim;  snap=mlkem_two
+    else
+        tb=tb_mlkem_hello_world_xsim; snap=mlkem_hello
+    fi
+
+    # compile RTL (every non-TB xvlog line from the shared tcl)
+    while read -r cmd; do
+        [[ "$cmd" == *"TB/tb_"* ]] && continue
+        eval "$cmd" || { echo "COMPILE FAILED: $cmd"; return 1; }
+    done < <(grep -E '^xvlog ' "$tcl_file")
+
+    echo "  xvlog -sv --relax sync_rtl/top/TB/$tb.v"
+    xvlog -sv --relax "sync_rtl/top/TB/$tb.v" || { echo "HELLO TB COMPILE FAILED"; return 1; }
+
+    echo "  xelab $tb -s $snap --timescale 1ns/1ps"
+    xelab "$tb" -s "$snap" --timescale 1ns/1ps || { echo "ELAB FAILED"; return 1; }
+
+    xsim "$snap" -R
+}
+
+if [ "$MODULE" = "hello" ]; then
+    run_hello_selected "$TCL_FILE" "$SEL_K"   # SEL_K position carries the variant ('two')
+    exit $?
+fi
+
 execute_tcl "$TCL_FILE"
\ No newline at end of file