diff --git a/en/readme/xts.md b/en/readme/xts.md
index e31cc476461cb85131908c0285e32eec579f6e1d..5453c120eafe0222b7f6650a36d5a480e5637523 100644
--- a/en/readme/xts.md
+++ b/en/readme/xts.md
@@ -370,7 +370,7 @@ The test cases are developed with the JavaScript language and must meet the prog
 | beforeEach | Presets a test-case-level action executed before each test case is executed. The number of execution times is the same as the number of test cases defined by it. You can pass the action function as the only parameter.  | No |
 | afterEach | Presets a test-case-level clear action executed after each test case is executed. The number of execution times is the same as the number of test cases defined by it. You can pass the clear function as the only parameter.  | No |
 | describe | Defines a test suite. You can pass two parameters: test suite name and test suite function. The describe statement supports nesting. You can use beforeall, beforeEach, afterEach, and afterAll in each describe statement.	 | Yes |
-| it | Defines a test case. You can pass three parameters: test case name, filter parameter, and test case function.<br>Usage of the filter parameter:<br>The value of the filter parameter is a 32-bit integer. Setting different bits to 1 means different configurations:<br><ul><li>bit 0: whether the filter parameter takes effect. **1** means that the test case is used for the function test and other settings of the parameter do not take effect.</li><li>Bits 0-10: test case categories</li><li>Bits 16-18: test case scales</li><li>Bits 24-28: test levels</li></ul>**Test case categories**: Bits 0-10 indicate FUNCTION (function test), PERFORMANCE (performance test), POWER (power consumption test), RELIABILITY (reliability test), SECURITY (security compliance test), GLOBAL (integrity test), COMPATIBILITY (compatibility test), USER (user test), STANDARD (standard test), SAFETY (security feature test), and RESILIENCE (resilience test), respectively.<br>**Test case scales**: Bits 16-18 indicate SMALL (small-scale test), MEDIUM (medium-scale test), and LARGE (large-scale test), respectively.<br>**Test levels**: Bits 24-28 indicate LEVEL0 (level-0 test), LEVEL1 (level-1 test), LEVEL2 (level-2 test), LEVEL3 (level-3 test), and LEVEL4 (level-4 test), respectively. | Yes |
+| it | Defines a test case. You can pass three parameters: test case name, filter parameter, and test case function.<br>**Usage of the filter parameter**:<br>The value of the filter parameter is a 32-bit integer. Setting different bits to 1 means different configurations:<br><ul><li>bit 0: whether the filter parameter takes effect. **1** means that the test case is used for the function test and other settings of the parameter do not take effect.</li><li>Bits 0-10: test case categories</li><li>Bits 16-18: test case scales</li><li>Bits 24-28: test levels</li></ul>**Test case categories**: Bits 0-10 indicate FUNCTION (function test), PERFORMANCE (performance test), POWER (power consumption test), RELIABILITY (reliability test), SECURITY (security compliance test), GLOBAL (integrity test), COMPATIBILITY (compatibility test), USER (user test), STANDARD (standard test), SAFETY (security feature test), and RESILIENCE (resilience test), respectively.<br>**Test case scales**: Bits 16-18 indicate SMALL (small-scale test), MEDIUM (medium-scale test), and LARGE (large-scale test), respectively.<br>**Test levels**: Bits 24-28 indicate LEVEL0 (level-0 test), LEVEL1 (level-1 test), LEVEL2 (level-2 test), LEVEL3 (level-3 test), and LEVEL4 (level-4 test), respectively. | Yes |
 
 Use the standard syntax of Jasmine to write test cases. The ES6 specification is supported.